Any file up to 500 MB. Drop several files and they come back as one ZIP. Many image, audio and video conversions run in your browser; anything else is uploaded and removed within the hour.
Convert your heavy TIFF raster images into modern AVIF files instantly. This conversion is ideal for web developers and designers looking to drastically reduce image payload sizes.
TIFF is a heavy, lossless raster format traditionally used for archiving and professional printing, preserving every pixel without compression artifacts. AVIF, on the other hand, is a modern raster image format designed for the web, utilizing advanced intra-frame prediction derived from AV1 video technology. When you convert TIFF to AVIF, you shift from a lossless structure to a lossy compression model, meaning part of the original image data is discarded to achieve superior compression ratios.
Because you are moving from a format without losses to one with losses, a portion of the original data will be permanently dropped, though visual degradation is typically imperceptible while file sizes shrink significantly.
We built this project so anyone can convert files without paywalls, accounts, or hidden limits. Here is what that promise means in practice.
Every converter on ConvertX is free to use: no trials, no premium tiers, and no credit packs. We will never put core conversion features behind a subscription. Whether you convert one photo or a hundred files a week, the price stays zero.
Many image, audio, and video conversions run entirely in your browser. Your files never leave your device for those jobs. When server processing is required for documents or specialized formats, uploads are handled securely and removed automatically — typically within one hour.
A quick guide to strengths and trade-offs of popular formats — so you pick the right one before converting.
Raster and vector graphics for web, print, and photography.
Common extensions: PNG, JPG, WebP, AVIF, GIF, SVG, HEIC, TIFF
Office files, PDFs, ebooks, and plain text.
Common extensions: PDF, DOCX, XLSX, PPTX, ODT, EPUB, TXT
Clips, streams, screen recordings, and movies.
Common extensions: MP4, WebM, MOV, MKV, AVI, MPEG
Music, podcasts, voice recordings, and sound effects.
Common extensions: MP3, WAV, FLAC, OGG, AAC, M4A, OPUS
