Format Set — Fruit Still Life (PNG)
A 1024×1024 fruit still life exported as PNG — one member of a conversion set that carries identical content across formats, so you can convert one and diff against the others.
Files for testing format conversion
The same content exported across many formats and linked as a group, so you can convert one and diff against the expected twin.
Format Set — Fruit Still Life (JPG)
A 1024×1024 fruit still life exported as JPG — one member of a conversion set that carries identical content across formats, so you can convert one and diff against the others.
Format Set — Fruit Still Life (WEBP)
A 1024×1024 fruit still life exported as WEBP — one member of a conversion set that carries identical content across formats, so you can convert one and diff against the others.
Format Set — Fruit Still Life (GIF)
A 1024×1024 fruit still life exported as GIF — one member of a conversion set that carries identical content across formats, so you can convert one and diff against the others.
Format Set — Fruit Still Life (BMP)
A 1024×1024 fruit still life exported as BMP — one member of a conversion set that carries identical content across formats, so you can convert one and diff against the others.
Format Set — Fruit Still Life (TIFF)
A 1024×1024 fruit still life exported as TIFF — one member of a conversion set that carries identical content across formats, so you can convert one and diff against the others.
Format Set — Fruit Still Life (AVIF)
A 1024×1024 fruit still life exported as AVIF — the modern-codec member of the conversion set.
Format Set — Fruit Still Life (HEIC)
A 1024×1024 fruit still life exported as HEIC — the HEIF/HEVC member of the conversion set, the format modern phones use for photos.
Format Set — Fruit Still Life (HEIF)
A 1024×1024 fruit still life exported as HEIF — the HEIF/HEVC member of the conversion set, the format modern phones use for photos.
ICO — Multi-Resolution App Icon
A Windows ICO containing four square sizes (16/32/48/64 px) of a simple app glyph — the classic favicon/desktop-icon container. Handy for testing icon extraction and multi-size rendering.
APNG — Animated Spinner
A 12-frame animated PNG (APNG) of a rotating arc — a lossless, alpha-capable alternative to animated GIF. Useful for testing APNG support, frame extraction, and GIF↔APNG conversion.
TGA — Truevision Test Image
A 256×256 fruit still-life image saved as uncompressed Truevision TGA — a format common in games and 3D texturing. For testing TGA decoders and conversion to modern formats.
PPM — Netpbm Test Image (P6)
A 256×256 fruit still-life image as binary Netpbm P6 (24-bit colour) — the minimal, header-plus-raw-pixels family used across Unix imaging tools. For testing Netpbm parsers and conversion.
PGM — Netpbm Test Image (P5)
A 256×256 fruit still-life image as binary Netpbm P5 (8-bit greyscale) — the minimal, header-plus-raw-pixels family used across Unix imaging tools. For testing Netpbm parsers and conversion.
PBM — Netpbm Test Image (P4)
A 256×256 fruit still-life image as binary Netpbm P4 (1-bit bitmap) — the minimal, header-plus-raw-pixels family used across Unix imaging tools. For testing Netpbm parsers and conversion.
JPEG Quality 10 (512px)
The same 512px source saved at JPEG quality 10 — part of a q10/50/90 ladder for comparing compression artefacts at a glance.
JPEG Quality 50 (512px)
The same 512px source saved at JPEG quality 50 — part of a q10/50/90 ladder for comparing compression artefacts at a glance.
JPEG Quality 90 (512px)
The same 512px source saved at JPEG quality 90 — part of a q10/50/90 ladder for comparing compression artefacts at a glance.
16-bit Grayscale PNG (deep colour)
A 16-bit (deep-colour) grayscale PNG holding a smooth 0–65535 gradient — for testing high-bit-depth support and spotting banding when a tool truncates to 8-bit.
CMYK JPEG (print colour space)
The fruit still life converted to the CMYK (print) colour space and saved as a JPEG — for testing CMYK decoding and CMYK→RGB conversion. Some web viewers render CMYK JPEGs with a colour shift.
Logo (SVG)
A generic sample brand logo as scalable vector graphics — a gradient mark plus a wordmark — for testing SVG rendering, rasterisation, and vector-to-raster conversion. Opens in the in-browser editor.
UI Icon (SVG)
A single stroke-style UI icon (a document) as a 24×24 SVG — the kind of vector icon used in interfaces, for testing icon rendering, recolouring, and SVG-to-PNG conversion.
Bar Chart (SVG)
A bar chart drawn as vector SVG — axis, gridlines, labelled bars — the scalable counterpart to the raster chart images, for testing SVG chart rendering and vector conversion.
Animated Spinner (SVG)
An animated loading spinner using SMIL (animateTransform) — a self-contained animated SVG for testing whether a renderer or converter handles SVG animation, and how it rasterises an animated frame.
Flat Illustration (SVG)
A flat vector landscape — gradient sky, sun, layered hills, and trees built from bezier paths — a richer SVG for testing gradient and path rendering, thumbnailing, and vector conversion.
AIFF — 440 Hz Sine Tone
A pure 440 Hz sine tone stored as AIFF — Apple's big-endian 16-bit PCM container, 3 seconds, 44.1 kHz mono. A clean reference for testing AIFF decoders and WAV↔AIFF conversion.
AU — 440 Hz Sine Tone
A pure 440 Hz sine tone stored as a Sun/NeXT AU file — big-endian 16-bit PCM, 3 seconds, 44.1 kHz mono. A compact reference for AU decoding and format conversion.
AIFF — 1 kHz Sine Tone
A pure 1 kHz sine tone stored as AIFF — Apple's big-endian 16-bit PCM container, 3 seconds, 44.1 kHz mono. A clean reference for testing AIFF decoders and WAV↔AIFF conversion.
AU — 1 kHz Sine Tone
A pure 1 kHz sine tone stored as a Sun/NeXT AU file — big-endian 16-bit PCM, 3 seconds, 44.1 kHz mono. A compact reference for AU decoding and format conversion.
WAV — Codec-Set Source
The lossless PCM WAV source for the audio conversion set — the same 3-second tone every other codec in this group is encoded from. Use it as the reference when diffing encoders.
MP3 — CBR 192 kbps
The source clip as constant-bitrate MP3 (LAME, 192 kbps) — the most universally supported lossy audio format. For testing MP3 decoders, players, and conversion.
MP3 — VBR (V2)
The same clip as variable-bitrate MP3 (LAME V2) — for testing VBR handling, seeking, and duration estimation against the CBR twin.
FLAC — Lossless
The clip as FLAC — free lossless audio compression. Byte-for-byte recoverable to the source PCM; for testing lossless decoders and conversion.
OGG — Vorbis
The clip as Ogg Vorbis — a royalty-free lossy codec. Browser-playable; for testing Vorbis decoding and Ogg conversion.
Opus
The clip as Opus — the modern low-latency codec used by WebRTC and streaming. Browser-playable; for testing Opus decoding and conversion.
AAC — ADTS
The clip as raw AAC in an ADTS stream — the codec behind most streaming and mobile audio. For testing AAC decoders and remux into MP4.
M4A — AAC (MP4)
The clip as AAC in an MP4/M4A container (faststart) — Apple's default audio container. For testing M4A parsing and MP4 audio conversion.
ALAC — Apple Lossless
The clip as Apple Lossless (ALAC) in an M4A container — lossless, unlike the AAC M4A twin. For testing ALAC decoding and lossless conversion.
WMA — Windows Media Audio
The clip as Windows Media Audio (WMA v2) in an ASF container — Microsoft's lossy codec. For testing WMA decoding and conversion to open formats.
AC-3 — Dolby Digital
The clip as AC-3 (Dolby Digital) — the multichannel codec used in DVD/broadcast. Rendered here in stereo; for testing AC-3 decoding and conversion.
M4R — iPhone Ringtone
The clip as an M4R iPhone ringtone — AAC in an MP4 container with the ringtone extension. For testing that a converter maps M4R↔M4A correctly.
AMR — Narrowband Speech
The clip resampled to 8 kHz mono and encoded as AMR narrowband — the telephony/voice-note codec. For testing AMR decoding and speech-codec conversion.
Formatted DOCX
A Word document with styled headings, bold/italic runs, a table, and an embedded image — for testing DOCX parsers and converters against a rich document.
Plain DOCX
A minimal Word document of plain paragraphs with no styling — the simplest valid DOCX for baseline parser testing.
Multi-Sheet XLSX with Formulas
A two-sheet workbook where a Summary sheet references a Data sheet with SUM and arithmetic formulas — for testing spreadsheet parsers, formula evaluation, and converters.
RTF — Formatted Document
A Rich Text Format document exercising bold, italic, underline, colour, headings, and a bullet list — all as plain control words. For testing RTF parsers, text extraction, and RTF→DOCX/PDF conversion.
RTF — Plain Document
The simplest possible RTF: one monospace font and a couple of paragraphs, no styling. A minimal baseline for RTF parsers and conversion tools.
ODT — Formatted OpenDocument Text
An OpenDocument Text file carrying the same content as the formatted DOCX — styled heading, bold/italic runs, and a table. The open twin in a DOCX↔ODT conversion set.
ODS — OpenDocument Spreadsheet
An OpenDocument Spreadsheet with the same tabular data as the plain XLSX and legacy XLS — a member of an XLSX↔ODS↔XLS conversion set for spreadsheet importers.
XLS — Legacy Excel Workbook
A legacy Excel 97–2003 (.xls / BIFF8) workbook holding the same tabular data as the plain XLSX and ODS — for testing legacy-format readers and XLS↔XLSX conversion.
ODP — OpenDocument Presentation
A three-slide OpenDocument Presentation with titles and body text — for testing ODP readers and slide converters. Original content, free to use.
DOC — Legacy Word 97
The formatted Word document saved as legacy binary .doc (Word 97-2003, OLE compound file) via LibreOffice. For testing legacy-Office parsers and DOC→DOCX conversion.
PPT — Legacy PowerPoint 97
A pitch-deck slide set saved as legacy binary .ppt (PowerPoint 97-2003, OLE compound file) via LibreOffice. For testing legacy-Office parsers and PPT→PPTX conversion.
SubRip Subtitles (SRT)
A SubRip (SRT) subtitle track with three timed cues — the most common subtitle format. Paired with the WebVTT twin for testing subtitle parsers and SRT↔VTT conversion.
WebVTT Subtitles (VTT)
A WebVTT subtitle track with three timed cues — the HTML5 <track> subtitle format. Paired with the SRT twin for testing subtitle parsers and VTT↔SRT conversion.
XLSX with Embedded Charts
A workbook with a data table plus a native bar chart and a line chart bound to the cells — for testing whether spreadsheet parsers and XLSX-to-PDF converters preserve and render embedded charts.
XLSX with Merged Cells, Conditional Formatting & Data Validation
A dashboard sheet exercising the features importers miss: a merged title cell, a three-colour conditional-formatting scale, a data-validation dropdown, cell borders, and frozen panes.
PPTX with Speaker Notes
A four-slide presentation where every slide carries speaker notes in the notes pane — for testing notes extraction and whether converters preserve the notes alongside the slides.
DOCX with Tracked Changes
A Word document with real tracked changes — insertions and deletions attributed to two reviewers with timestamps — for testing how tools read, accept, reject, or preserve revisions.
DOCX with Comments
A Word document with two anchored reviewer comments — for testing comment extraction and whether converters preserve or drop review annotations.
Fake Users Dataset (CSV, 500 rows)
A 500-row dataset of fake but realistic users (name, email, address, date of birth), generated with a fixed seed. Paired with a JSON twin.
Fake Users Dataset (JSON, 500 records)
The 500-row users dataset as a JSON array — the format twin of the CSV version, for testing import and conversion.
Fake Orders Dataset (CSV, 1000 rows)
A 1000-row orders dataset whose user_id references the users dataset — a relational fixture for testing joins and import flows. Paired with a JSON twin.
Fake Orders Dataset (JSON, 1000 records)
The 1000-row orders dataset as JSON — the format twin of the CSV version, relational to the users dataset.
OpenAPI 3.1 Spec (JSON)
A small but complete OpenAPI 3.1 description (two paths, three schemas) in JSON — for testing API tooling, mock servers, client codegen, and docs generators.
OpenAPI 3.1 Spec (YAML)
The same OpenAPI 3.1 description in YAML — the format most API definitions ship in. Paired with the JSON twin for testing YAML↔JSON conversion and spec parsers.
GraphQL Schema (SDL)
A GraphQL Schema Definition Language (SDL) file with queries, a mutation, object/input types, and an enum — for testing GraphQL schema parsers, linters, and code generators.
Protocol Buffers Schema (proto3)
A proto3 Protocol Buffers schema with messages, an enum, and a repeated field — for testing protobuf compilers (protoc), codegen, and schema tooling.
API Response — Users Page 1 (JSON)
Page 1 of a paginated JSON API response (users), with page metadata and a `hasMore` flag. Paired with page 2 for testing pagination and infinite-scroll logic.
API Response — Users Page 2 (JSON)
Page 2 (the final page) of a paginated JSON API response. Paired with page 1 for testing pagination, `hasMore` handling, and list merging.
API Error — 404 (RFC 9457 problem+json)
A 404 error body in RFC 9457 (problem+json) form, with type, title, status, detail, and instance — for testing structured error handling and problem-detail parsers.
API Error — 422 Validation (JSON)
A 422 validation-error response with a machine-readable list of field errors — for testing form-validation surfacing and error mapping.
Environment File (.env template)
A sample environment (.env) file with typical configuration keys and placeholder values — for testing dotenv parsers and config loaders. Contains no real secrets.
Dockerfile (multi-stage)
A sample multi-stage Dockerfile with a build stage and a slim runtime stage — for testing Dockerfile parsers, linters (hadolint), and syntax highlighting. Illustrative only.
Docker Compose File (YAML)
A sample docker-compose file defining a web service with Postgres and Redis dependencies — for testing Compose parsers and YAML tooling.
Web App Manifest (webmanifest)
A W3C Web App Manifest (JSON) with name, theme colours, and icon set — for testing PWA install prompts and manifest validators.
Parquet — Columnar Table
A small employee table as Apache Parquet — the columnar format at the heart of modern data lakes and analytics. For testing Parquet readers (pandas, Spark, DuckDB) and conversion.
ORC — Columnar Table
The same employee table as Apache ORC — the columnar format common in the Hive/Hadoop ecosystem. For testing ORC readers and Parquet↔ORC conversion.
Feather — Arrow IPC Table
The same table as Feather (Arrow IPC file) — the zero-copy on-disk form of an Apache Arrow table. For testing Arrow readers and fast columnar interchange.
Avro — Row Binary + Schema
The same records as Apache Avro — a compact row-based binary format that embeds its own schema, widely used in Kafka pipelines. For testing Avro decoders and schema evolution.
MessagePack — Binary JSON
The records as MessagePack — a compact binary serialization that maps onto the JSON data model, common in caches and RPC. For testing MessagePack codecs and JSON↔MessagePack conversion.
CBOR — Concise Binary Object
The records as CBOR — the IETF concise binary object representation used in IoT and COSE/WebAuthn. For testing CBOR decoders and JSON↔CBOR conversion.
BSON — Binary JSON (MongoDB)
The records as BSON — the binary-JSON encoding MongoDB stores documents in. For testing BSON decoders and JSON↔BSON conversion.
HDF5 — Hierarchical Scientific Data
A small HDF5 file with a compound 'employees' dataset and a numeric 'readings' grid — the hierarchical format used across science and ML. For testing h5py/HDF5 readers and conversion.
DBF — dBase / xBase Table
The employee table as a dBase (DBF) file — the venerable xBase table format still emitted by GIS tools and legacy databases. For testing DBF readers and DBF→CSV conversion.
Protobuf — Encoded Message
A single protobuf User message in binary wire format (varint + length-delimited fields) — the serialized counterpart to the user.proto schema. For testing protobuf decoders without the generated code.
E-commerce Products (CSV, 200 rows)
A realistic e-commerce product catalogue (200 rows) — part of a relational dataset (products, customers, orders) with CSV, JSON, SQL, and Parquet twins for testing joins, imports, and conversion.
E-commerce Products (JSON, 200 records)
The e-commerce products table as a JSON array — the format twin of the CSV, for import and conversion testing.
E-commerce Products (Parquet, 200 rows)
The e-commerce products table as Apache Parquet — the columnar twin, for testing analytics engines (pandas, DuckDB, Spark).
E-commerce Customers (CSV, 500 rows)
A realistic e-commerce customer directory (500 rows) — part of a relational dataset (products, customers, orders) with CSV, JSON, SQL, and Parquet twins for testing joins, imports, and conversion.
E-commerce Customers (JSON, 500 records)
The e-commerce customers table as a JSON array — the format twin of the CSV, for import and conversion testing.
E-commerce Orders (CSV, 2000 rows)
A realistic e-commerce order lines (customer_id → customers, product_id → products) (2000 rows) — part of a relational dataset (products, customers, orders) with CSV, JSON, SQL, and Parquet twins for testing joins, imports, and conversion.
E-commerce Orders (JSON, 2000 records)
The e-commerce orders table as a JSON array — the format twin of the CSV, for import and conversion testing.
E-commerce Orders (Parquet, 2000 rows)
The e-commerce orders table as Apache Parquet — the columnar twin, for testing analytics engines (pandas, DuckDB, Spark).
E-commerce Database Schema (SQL)
A relational SQL schema (products, customers, orders with primary and foreign keys) plus sample INSERTs — the DDL twin of the e-commerce dataset, for testing schema import and migrations.
Stock OHLCV — Daily Candles (CSV, 252 rows)
A year of daily OHLCV stock candles (open/high/low/close/volume) as a seeded random walk — a realistic finance time-series for testing charting, indicators, and importers. JSON twin included.
IoT Sensor Readings (CSV, 1440 rows)
A day of IoT sensor readings (temperature, humidity, pressure) at one-minute intervals from three sensors, with a realistic daily cycle plus noise — for testing time-series ingestion and downsampling. JSON twin included.
FHIR R4 Patient Bundle (JSON)
A sample HL7 FHIR R4 bundle with a Patient plus vital-sign Observations, an Encounter, and a Condition — a realistic healthcare-interoperability fixture for testing FHIR parsers and mappers. Synthetic data, not a real person.
Large Transactions Dataset (CSV, 50k rows)
A 50,000-row transactions dataset — an in-repo 'large' fixture for testing streaming CSV parsers, import performance, and pagination. Deterministic (fixed seed).
Jupyter Notebook (IPYNB)
A valid Jupyter notebook (nbformat 4.5) with markdown cells, code cells, and real outputs (stdout stream and an execute result) — for testing notebook parsers, nbconvert, and JSON tooling.
Mermaid Flowchart (MMD)
A Mermaid flowchart of an order-fulfilment process as diagrams-as-code — for testing Mermaid rendering, diagram-to-image conversion, and Markdown pipelines that embed Mermaid.
Graphviz DOT Graph
A Graphviz DOT directed graph describing a fulfilment pipeline — for testing DOT parsing, Graphviz rendering, and DOT-to-SVG/PNG conversion.
PlantUML Sequence Diagram
A PlantUML sequence diagram of an order interaction (customer, store, warehouse) as diagrams-as-code — for testing PlantUML parsing and diagram rendering pipelines.
draw.io Diagram (XML)
A draw.io (diagrams.net) diagram in its native mxGraphModel XML — a small flowchart — for testing draw.io import/export and XML parsing of diagram files.
Sample JWT (HS256)
A sample JSON Web Token (JWT) signed with HS256 using a published example secret — verifiable but powerless — for testing JWT decoders and validators. Sample only, never for production. Paired with its decoded claims.
Invoice Template (DOCX)
A clean invoice template as a Word document with a line-item table and total. Paired with a PDF twin of the same layout.
Invoice Template (PDF)
The invoice template as a print-ready PDF — the format twin of the DOCX version, for converter testing and direct printing.
Sales Quote Template (DOCX)
A realistic sales quotation with a five-line item table, subtotal, tax, and validity terms — as an editable Word document, twinned with a print-ready PDF.
Sales Quote Template (PDF)
The sales quotation as a branded, print-ready PDF with a line-item table and totals — the format twin of the DOCX quote, for converter testing and direct sending.
Purchase Order Template (DOCX)
A purchase order with buyer and vendor blocks, a line-item table, totals, and Net-30 terms — an editable Word document paired with a PDF twin.
Purchase Order Template (PDF)
The purchase order as a branded print-ready PDF with a line-item table and totals — the format twin of the DOCX version for converter and print testing.
Newsletter Template (DOCX)
A company newsletter as an editable Word document with a masthead and three short articles — twinned with an HTML email version of the same content.
ZIP - Flat
A ZIP archive — 3 files at the root, no directories. Deterministic (fixed member timestamps) and safe to extract anywhere.
ZIP - Nested Folders
A ZIP archive — files organised into data/ and docs/ subfolders. Deterministic (fixed member timestamps) and safe to extract anywhere.
ZIP - Deep Directory Tree
A ZIP archive — a file nested six directory levels deep. Deterministic (fixed member timestamps) and safe to extract anywhere.
ZIP - Unicode Filenames
A ZIP archive — UTF-8 filenames: accents, Japanese, emoji. Deterministic (fixed member timestamps) and safe to extract anywhere.
ZIP - Many Small Files
A ZIP archive — 100 tiny files for throughput testing. Deterministic (fixed member timestamps) and safe to extract anywhere.
ZIP - Empty Archive
A valid ZIP with zero entries — the empty-archive edge case for testing how unarchivers handle a container with nothing inside.
JAR - Resource Archive
A Java Archive (JAR) — a ZIP with a META-INF/MANIFEST.MF and resource files only (no .class bytecode). For testing JAR/ZIP readers and manifest parsing.
TAR - Uncompressed
A uncompressed USTAR of a small source tree — for testing tar extraction and the TAR container. Member timestamps are fixed for reproducibility.
TAR.GZ - Gzip Tarball
A gzip-compressed tar of a small source tree — for testing tar extraction and the TGZ container. Member timestamps are fixed for reproducibility.
TAR.BZ2 - Bzip2 Tarball
A bzip2-compressed tar of a small source tree — for testing tar extraction and the TBZ2 container. Member timestamps are fixed for reproducibility.
TAR.XZ - XZ Tarball
A xz/LZMA-compressed tar of a small source tree — for testing tar extraction and the TXZ container. Member timestamps are fixed for reproducibility.
GZ - Gzip Single File
A single text file compressed with gzip — the container-free codec on its own, for testing decompression and codec detection.
BZ2 - Bzip2 Single File
A single text file compressed with bzip2 — the container-free codec on its own, for testing decompression and codec detection.
XZ - XZ Single File
A single text file compressed with xz/LZMA — the container-free codec on its own, for testing decompression and codec detection.
7z - LZMA2 Archive
A 7-Zip archive using LZMA2 compression, containing a small documented file tree. For testing 7z extraction and conversion.
7z - Password Protected
A password-protected 7z archive (AES-256, encrypted header). The password is “novus-example” — printed here on purpose so you can test encrypted-archive extraction. Contains only harmless sample text.
ISO - 9660 Disk Image
A real ISO 9660 disk image with Joliet and Rock Ridge extensions for long filenames, holding a few documented text files. For testing ISO mounting, extraction, and conversion.
ZST — Zstandard Single File
A text file compressed with Zstandard (.zst) — the container-free codec on its own — for testing zstd decompression and codec detection.
LZ4 — Single File
A text file compressed with the LZ4 frame format (.lz4) — the container-free codec on its own — for testing LZ4 decompression and codec detection.
WARC — Web Archive
A minimal WARC 1.0 web archive with a warcinfo record and an HTTP response record capturing a small HTML page — for testing WARC parsers and web-archive tooling.
EPUB 3 — Valid E-book
A valid EPUB 3 e-book with a cover image, an EPUB navigation document, styled chapters, and a correctly stored OCF mimetype. Original content, for testing EPUB readers and EPUB→other conversion.
EPUB — Intentionally Invalid (bad OCF mimetype)
An intentionally invalid EPUB: identical to the valid twin except its OCF mimetype entry is compressed and mislabelled as application/zip — a real EPUB spec violation. For testing how readers and validators handle a malformed container. Clearly labelled; harmless content.
FB2 — FictionBook E-book
A FictionBook (FB2) e-book — a single self-contained XML file with full title and document metadata and three chapters. Popular in e-reader ecosystems; for testing FB2 parsers and FB2→EPUB conversion.
CBZ — Comic Book Archive
A CBZ comic archive — a ZIP of sequentially named JPEG pages, the standard container for digital comics. Built from generated pages; for testing comic readers and CBZ→PDF conversion.
MOBI — Kindle E-book
The valid EPUB converted to MOBI (Mobipocket) with Calibre — the classic Kindle format. For testing MOBI readers and EPUB→MOBI conversion.
AZW3 — Kindle KF8 E-book
The valid EPUB converted to AZW3 (Kindle KF8) with Calibre — the modern Kindle format. For testing AZW3 readers and EPUB→AZW3 conversion.
STL — ASCII Cube
A 10 mm cube as ASCII STL — human-readable facet/normal/vertex records. The most portable 3D-print mesh format; for testing STL parsers and slicers.
STL — Binary Cube
The same 10 mm cube as binary STL — an 80-byte header, a triangle count, and packed little-endian floats. Compact; for testing binary-STL readers.
OBJ — Wavefront Cube
A 10 mm cube as a Wavefront OBJ — plain-text vertices and triangular faces, the lingua franca of 3D asset exchange. For testing OBJ importers and conversion.
3MF — Manufacturing Cube
A 10 mm cube as 3MF — the modern OPC-packaged manufacturing format (a ZIP of model XML plus relationships). For testing 3MF readers and slicers.
GLB — glTF 2.0 Binary Cube
A 10 mm cube as binary glTF (GLB) — the dominant modern format for 3D on the web and in AR, with per-face normals packed into one self-contained file. Powers the interactive 3D preview on this site; for testing glTF loaders and conversion.
DXF — CAD Cube (line geometry)
A 10 mm cube drawn as 12 DXF LINE entities — the AutoCAD interchange format, written with ezdxf. For testing DXF parsers and CAD conversion.
EPS — Isometric Cube Illustration
An isometric cube as Encapsulated PostScript — a 2D vector illustration with three shaded faces. For testing EPS/PostScript rendering and vector conversion.
STEP — AP214 Cube Corner Points
A minimal, well-formed STEP AP214 file holding the eight corner points of a 10 mm cube. For testing STEP header and entity parsing and CAD-exchange tooling.
IGES — Minimal Line Entity
A minimal, well-formed IGES 5.3 file with a single LINE entity and correct Start/Global/Directory/Parameter/Terminate sections. For testing IGES parsers and CAD conversion.
glTF — JSON Cube (embedded)
A 10 mm cube as text glTF 2.0 — the JSON scene with its binary buffer embedded as a data URI, the human-readable sibling of the GLB. For testing glTF parsers and GLB↔glTF conversion.
PLY — ASCII Cube
A 10 mm cube as ASCII PLY (Stanford polygon format) — plain-text vertex and face lists common in 3D scanning and research. For testing PLY parsers and conversion.
PLY — Binary Cube
The same cube as binary little-endian PLY — the compact form of the Stanford polygon format. For testing binary-PLY readers.
OFF — Geomview Cube
A 10 mm cube as OFF (Object File Format) — the minimal vertex/face text format from Geomview, common in computational geometry. For testing OFF parsers and conversion.
DAE — COLLADA Cube
A 10 mm cube as COLLADA (.dae) — the XML digital-asset-exchange format used across 3D tools and game engines. For testing COLLADA parsers and conversion.
WRL — VRML97 Cube
A 10 mm cube as VRML97 (.wrl) — the classic Virtual Reality Modeling Language scene format, ancestor of X3D. For testing VRML parsers and conversion.
X3D — Interchange Cube
A 10 mm cube as X3D — the XML successor to VRML for web and interchange 3D. For testing X3D parsers and VRML↔X3D conversion.
USDZ — Universal Scene Description
A 10 mm cube as USDZ — Pixar's Universal Scene Description packaged as a stored zip, the format Apple uses for AR Quick Look. For testing USD/USDZ readers and conversion.
TTF — Novus Sans Sample
The Novus Sans Sample demonstration typeface as TrueType (glyf outlines) — one member of a TTF/OTF/WOFF/WOFF2 conversion set built from scratch with fontTools. Original and free to use; a fixture for testing font loading, subsetting, and conversion.
WOFF — Novus Sans Sample
The Novus Sans Sample demonstration typeface as WOFF (TrueType-flavoured web font) — one member of a TTF/OTF/WOFF/WOFF2 conversion set built from scratch with fontTools. Original and free to use; a fixture for testing font loading, subsetting, and conversion.
WOFF2 — Novus Sans Sample
The Novus Sans Sample demonstration typeface as WOFF2 (Brotli-compressed web font) — one member of a TTF/OTF/WOFF/WOFF2 conversion set built from scratch with fontTools. Original and free to use; a fixture for testing font loading, subsetting, and conversion.
OTF — Novus Sans Sample
The Novus Sans Sample demonstration typeface as OpenType/CFF outlines — one member of a TTF/OTF/WOFF/WOFF2 conversion set built from scratch with fontTools. Original and free to use; a fixture for testing font loading, subsetting, and conversion.
MP4 — H.264 Clip
A short H.264 test clip in an MP4 container (yuv420p, faststart) — the most widely supported web and mobile video format. Video-only and tiny; for testing players, thumbnailers, and MP4→other conversion.
WebM — VP9 Clip
The same clip as WebM/VP9 — the royalty-free web video format. Video-only; for testing HTML5 <video>, VP9 decoding, and WebM conversion.
MKV — Matroska H.264 Clip
The clip in a Matroska (MKV) container with H.264 video — the flexible open container used for rich multi-track media. For testing MKV demuxing and remux/conversion.
MOV — QuickTime H.264 Clip
The clip in a QuickTime (MOV) container with H.264 video — Apple's container, common from cameras and editors. For testing MOV parsing and MOV→MP4 conversion.
AVI — Motion-JPEG Clip
The clip as Motion-JPEG in a classic AVI (RIFF) container — every frame an independent JPEG. For testing legacy AVI readers, MJPEG decoding, and AVI→modern-codec conversion.
OGV — Ogg Theora Clip
The clip as Ogg Theora — a fully open, royalty-free format. Browser-playable; for testing Theora decoding and Ogg video conversion.
MPEG — MPEG-1 Clip
The clip as MPEG-1 in an MPEG program stream (.mpg) — the VCD-era format. For testing legacy MPEG demuxing and conversion to modern codecs.
M4V — iTunes H.264 Clip
The clip as M4V — Apple's MP4 variant used by iTunes. Browser-playable; for testing M4V handling and M4V↔MP4 conversion.
3GP — Mobile H.264 Clip
The clip as 3GP — the 3GPP mobile container from the feature-phone era. For testing 3GP demuxing and conversion.
TS — MPEG-TS H.264 Clip
The clip as an MPEG transport stream (.ts) — the container behind HLS streaming and broadcast. For testing TS demuxing and HLS tooling.
FLV — Flash Video Clip
The clip as Flash Video (.flv) with H.264 — the legacy web-streaming container. For testing FLV demuxing and conversion to MP4.
WMV — Windows Media Video
The clip as Windows Media Video (WMV2 in an ASF container) — Microsoft's legacy video format. For testing WMV decoding and conversion to open formats.
AVI — DivX (MPEG-4 ASP) Clip
The clip as DivX-style MPEG-4 ASP in an AVI container — the codec that defined early desktop video. For testing MPEG-4 Part 2 decoding and AVI conversion.
Video Clips Archive (ZIP)
A ZIP bundling the MP4 and WebM test clips with a README — a 'video archive' for testing pipelines that unpack an archive and then transcode its contents. Stored (not re-compressed), since the clips are already compressed.
Plain-Text Email (EML)
A standards-compliant plain-text email message (.eml) with full headers — the simplest valid RFC 822 message for testing email header parsing and EML import.
Multipart Email — Text + HTML (EML)
A multipart/alternative email carrying both a plain-text and an HTML body — for testing MIME part selection, HTML-part handling and sanitising, and multipart parsing.
Email with Attachment (EML)
A multipart/mixed email with a base64-encoded CSV file attachment — for testing attachment detection, decoding, and extraction from an EML message.
MBOX Mailbox (three-message thread)
An mbox mailbox concatenating a short three-message email thread with the classic 'From ' separator lines and >From body escaping — for testing mailbox splitting and thread reconstruction.