Changelog
New file formats, tools, blog posts, and updates.Last updated: May 2, 2025
May 2025
Glossary — 75+ file format terms
Searchable glossary of encoding, compression, image, video, audio, web, and security terminology with A-Z navigation.
Browser File Format Support page
Interactive compatibility table for 29 formats across 6 browsers with auto-detection of your current browser.
5 File Security blog posts
Upload security checklist, zip bomb prevention, EXIF privacy risks, secure download implementation, and file type validation beyond extensions.
7 Error Fix blog posts
Fix corrupt uploads, 413 errors, unsupported file types, broken images, video playback, CSV encoding, and ZIP extraction errors.
7 Developer Guide blog posts
Cypress, Playwright, CI/CD, k6, S3 upload, image pipeline, and database seeding guides using sample files.
6 Cheat Sheet blog posts
Image formats, video codecs, audio formats, archives, file size limits, and MIME types comparison tables.
MIME Type Lookup tool
Search 129 MIME types by extension or MIME string. Copy button, magic bytes, category filter, and sample file links.
Download Speed Test tool
Measure download speed with files from 1MB to 100MB. Speed gauge, progress bar, history table, and tier comparison.
Corrupted & Broken test files
10 intentionally corrupted files (PDF, JPG, PNG, ZIP, MP4, DOCX, XLSX) for QA testing error handling and file validation.
April 2025
HTML sample files added
10 HTML files: simple page, forms, tables, media embeds, landing page, email template. 3KB to 1MB.
LOG sample files added
12 log files: Apache access, Nginx, JSON structured, error with stack traces, syslog. 10KB to 50MB.
Apache Parquet sample files added
8 Parquet files: Snappy, GZIP, uncompressed compression. 100KB to 50MB for data engineering testing.
SQLite database files added
7 SQLite files: single-table, multi-table, with-indexes, with-views, empty-schema. 8KB to 50MB.
YAML and TOML config files added
YAML: Docker Compose, K8s manifests, GitHub Actions. TOML: Cargo.toml, pyproject.toml templates.
Markdown sample files added
8 Markdown files: basic, tables, code blocks, GFM, README template, API docs. 1KB to 1MB.
EPUB ebook files added
7 EPUB files: text-only, with-images, multi-chapter, with-TOC variants. 50KB to 10MB.
Font files added — TTF, OTF, WOFF2
15 font files across 3 formats with varying sizes. New /fonts/ category with hub page.
TAR.GZ and TAR.BZ2 archives added
14 tarball files: gzip and bzip2 compressed. 100KB to 100MB for Linux/DevOps testing.
MKV Matroska video files added
10 MKV files: H.264, H.265, VP9, with-subtitles, multi-audio. 1MB to 100MB.
FLAC lossless audio files added
7 FLAC files: 16/24-bit, 44.1-96kHz, CD quality to hi-res. 1MB to 50MB.
HEIC/HEIF iPhone photo files added
5 HEIC files: portrait, landscape, 10-bit, Display P3. 500KB to 10MB.
AVIF next-gen image files added
7 AVIF files: lossy, lossless, transparent, 720p to 4K. 100KB to 10MB.
SEO optimization across all pages
Updated titles, meta descriptions, OG tags, FAQs, and JSON-LD structured data across all format pages. Added sitemap.xml.
Homepage updated — 50+ formats, Fonts category
Updated category cards with all new formats. Added Fonts to navigation. Changed '25+ formats' to '50+ formats'.