Tested and ranked by privacy, watermarks, daily limits, format support, and whether your video files ever leave your device. No sponsored placements.
Converts video entirely in your browser using FFmpeg.wasm — the same engine powering professional video pipelines, compiled to WebAssembly. No upload, no watermark, no daily limit, no account. Converts MP4, WebM, AVI, MKV, MOV, OGV and more. Also handles audio extraction (MP3, WAV, AAC from video). Slower on weak devices for large files, but completely private.
Free open-source desktop app (Windows, macOS, Linux). Local processing — no upload, no limit, no watermark. Supports H.264, H.265, AV1, VP8, VP9 encoding. Batch conversion. Advanced bitrate, resolution, and audio track controls. Ideal for large video files that exceed browser memory limits. Requires installation.
Cloud-based with 300+ formats including rare video codecs. Instant download. Free: 10 conversions per day, 100 MB. Files uploaded. Faster than browser-based tools for large video because cloud servers have dedicated hardware — but no privacy guarantee.
Cloud-based with a 1 GB free file size limit — the most generous among online tools. 25 conversions per hour free. Files uploaded. No watermark. Best choice when you have a large video file that exceeds Convertlo's 50 MB browser limit and don't want to install HandBrake.
Advanced per-format options: resolution, bitrate, codec, frame rate, audio channels. Cloud-based with a free credit allowance (limited). Files uploaded. Best for professional use where specific encoding parameters matter and you've hit Convertlo's format or complexity limits.
| Feature | Convertlo | HandBrake | Convertio | FreeConvert | CloudConvert |
|---|---|---|---|---|---|
| Files uploaded | Never | Never | Yes | Yes | Yes |
| Watermark | None | None | None | None | None |
| Free limit | Unlimited | Unlimited | 10/day | 25/hour | Credits |
| Max file size | ~50 MB | Unlimited | 100 MB | 1 GB | 1 GB |
| Account required | Never | Never | No (basic) | No (basic) | No (basic) |
| Works offline | Yes | Yes | No | No | No |
| Install required | No | Yes | No | No | No |
| Common formats | MP4, WebM, AVI, MKV, MOV | MP4, MKV, WebM, AVI | 300+ including rare | MP4, MOV, AVI, MKV +more | 200+ with settings |
Convertlo is the best free online video converter for privacy and unlimited use — it converts MP4, MOV, AVI, MKV, WebM, and more directly in your browser using FFmpeg.wasm. No file upload, no watermark, no daily limit, no account required. For large files over 50 MB, FreeConvert (1 GB limit) handles them via cloud processing.
Yes. All five tools listed — Convertlo, HandBrake, Convertio, FreeConvert, and CloudConvert — convert video with no watermark on their free tiers. Unlike some mobile apps, none of these add a watermark to converted video.
Convertlo and HandBrake both convert video locally without uploading. Convertlo runs FFmpeg.wasm in your browser — nothing reaches any server. HandBrake is a desktop app that processes everything locally. Convertio, CloudConvert, and FreeConvert all upload video to cloud servers for processing.
For large files over 50 MB, FreeConvert (1 GB free) or CloudConvert (1 GB free) handle them via cloud processing. For the largest files with full control, HandBrake (desktop) has no size limit. Convertlo handles files up to ~50 MB in the browser depending on available device RAM.
Convertlo converts MP4, WebM, AVI, MKV, MOV, OGV, and other common video formats using FFmpeg.wasm. Output MP4 uses H.264 encoding; WebM uses VP8/VP9. It also extracts audio from video — outputting MP3, WAV, AAC, OGG, and FLAC.
MP4, WebM, AVI, MKV, MOV and more. FFmpeg-powered, browser-based, 100% private.
Convert Video Now →