Blog
Articles about file formats, conversion, and tips
Why your HEIC photo won't display on Android
iPhones save photos as HEIC – older Android devices, Windows without codec, and many web platforms can't handle it. What HEIC is, which devices support it, and how to convert it easily.
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WebP vs JPG vs AVIF: Which Image Format for Your Website?
Real test results with file size comparison: Which image format saves the most space? WebP, JPG, or AVIF – with recommendations and code examples.
Read more →What is HEIC and why does Apple use it?
HEIC has been Apple's default image format since iOS 11. Learn what HEIC is, why Apple uses it, and how to convert HEIC files.
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AVIF Explained: The Next Image Format
AVIF offers up to 50% smaller files than JPG at equal quality and is royalty-free. Technical details, browser support, and compression comparison with test data.
Read more →GDPR and file converters: What companies need to know
File converters and GDPR – what risks exist, what legal basis applies, and how browser-based conversion helps.
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OCR Accuracy Compared: Tesseract vs Cloud APIs
Tesseract, Google Vision, AWS Textract, and Azure Read compared: recognition rate, error types, data privacy, and use cases.
Read more →How does in-browser file conversion work? WebAssembly explained
Why modern converters work without uploads: WebAssembly, ffmpeg.wasm, Canvas and the COOP/COEP headers explained simply, including the limits and the privacy advantage.
Read more →JPEG XL: The technically best image format is back
JPEG XL is back in Chrome 145. What JXL can do, why Google removed it first, the current browser support in 2026, and how to use it sensibly.
Read more →AV1, H.265 & H.264: Which video codec in 2026?
AV1 is about 30 % more efficient than H.265 and royalty-free, but slower at encoding. Codecs, containers, hardware support and browser compatibility compared for 2026.
Read more →MP3, AAC, Opus, FLAC & WAV: which audio format when?
The five most important audio formats compared: compression, quality at equal bitrate, compatibility and royalty-free status, with a clear recommendation.
Read more →EXIF metadata: what your photos secretly reveal about you
GPS, device, time: every photo carries hidden EXIF data. Which platforms remove it, which don't, and why only removing it before sharing is safe.
Read more →PDF/A explained: the format for long-term archiving
PDF/A (ISO 19005) makes documents reproducible for decades. Versions A-1 to A-4, conformance levels, what's forbidden, and the link to e-invoicing.
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