Tested and ranked by privacy, daily limits, format support, and conversion speed. No sponsored placements — just an honest comparison of the tools that actually hold up.
Converts images, audio, video, and documents entirely in your browser. No account, no upload, no daily limit. Works offline after first load.
Google Chrome Labs tool. Browser-based image compression and format conversion. Excellent quality controls. Images only, limited formats (JPEG, PNG, WebP, AVIF, JXL).
Cloud-based with 300+ formats including obscure ones. Files are uploaded and processed on their servers. Free tier is 10 conversions per day, 100 MB per file.
Cloud converter with advanced output options per format. 25 free conversions per day (no account), 200+ formats, good for professional output settings.
Highest free file size limit (1 GB per file). Supports 25 conversions per hour. Cloud-based. Good for large files that would exceed device RAM limits.
| Feature | Convertlo | Squoosh | Convertio | CloudConvert | FreeConvert |
|---|---|---|---|---|---|
| Files uploaded | Never | Never | Yes | Yes | Yes |
| Daily free limit | Unlimited | Unlimited | 10/day | 25/day | 25/hour |
| Account required | Never | Never | No | No | No |
| Free file size | 50 MB | Unlimited* | 100 MB | 1 GB | 1 GB |
| Image formats | JPG, PNG, WebP, AVIF, HEIC, GIF, BMP, TIFF, SVG | JPEG, PNG, WebP, AVIF, JXL, BMP | 300+ total | 200+ total | 200+ total |
| Audio / video | Yes | No | Yes | Yes | Yes |
| Works offline | Yes | Yes | No | No | No |
| Batch conversion | Yes | No | Yes | Yes | Yes |
| Cost for unlimited | Always free | Always free | From $9.99/mo | From $9.00/mo | From $9.99/mo |
*Squoosh file size limited by available browser memory. Large files may crash on low-RAM devices.
Choose Convertlo if you convert files regularly and privacy matters — your files never leave your device. Also the right pick if you need a single tool for images, audio, video, and documents without hitting daily caps or signing up.
Choose Squoosh if you're specifically compressing images and want precise control over quality settings. It's built by Google Chrome Labs and focuses exclusively on image compression quality tuning.
Choose Convertio or CloudConvert if you need a format that Convertlo doesn't cover — niche codecs, legacy formats, or highly specific output options. Budget for the paid tier if you'll exceed 10–25 conversions per day.
Choose FreeConvert if you have a file over 50 MB that won't fit in your device's RAM for browser-based conversion. Its 1 GB free limit is the most generous among cloud converters.
For most users, Convertlo is the best choice — it's unlimited, requires no account, and never uploads your files. Everything converts in your browser. If you need formats beyond JPG, PNG, WebP, AVIF, HEIC, GIF, BMP, and SVG, Convertio or CloudConvert cover 200–300+ formats.
Convertlo and Squoosh both convert images entirely in the browser — nothing leaves your device. Convertio, CloudConvert, and FreeConvert all send files to their servers for processing, which means your files travel over the internet.
Yes — Convertlo has no daily conversion limit. Squoosh is also unlimited. Convertio caps free users at 10 conversions per day, CloudConvert at 25 per day, and FreeConvert at 25 per hour.
Yes. Convertlo, Squoosh, Convertio, CloudConvert, and FreeConvert all work without an account for basic use. Canva (which has a built-in image converter) requires you to create an account even for simple conversions.
Convertlo converts JPG, PNG, WebP, AVIF, HEIC, GIF, BMP, TIFF, SVG, and PDF images. It also supports audio (MP3, WAV, FLAC, AAC, OGG, M4A), video (MP4, WebM, AVI, MKV, MOV), and documents (DOCX, XLSX, CSV, TXT, HTML).
100% browser-based. JPG, PNG, WebP, AVIF, HEIC, GIF, SVG and more. No account required.
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