File tools that run right in your browser
Eight tools for converting, cutting and opening audio, image and video files. The files you choose are not uploaded; they are processed inside the browser you are using now. No sign-up and nothing to install.
Tools
- Audio ConverterMP3, WAV, FLAC and M4A to OGG, and back.MP3 · WAV · FLAC · M4A → OGG · MP3 · WAV
- Audio CutterPick a range on the waveform and save just that part, with fades.MP3 · WAV · M4A · OGG → WAV · MP3 · OGG
- Image ConverterTo PNG, JPEG or WEBP, with resize and background removal.JPG · WEBP · GIF · BMP · SVG · AVIF → PNG · JPEG · WEBP · BMP
- Video ConverterWEBM, MOV and MKV to MP4, or to GIF.WEBM · MOV · MKV · AVI ↔ MP4 · GIF
- Video to GIFPick a part of a video, set size and fps, save as GIF.MP4 · WEBM · MOV → GIF
- Image CropCrop by exact pixels or just drag the box.1:1 · 4:3 · 16:9 · 9:16 · 3:2
- App Icon GeneratorOne image becomes 74 app icons.iOS · macOS · watchOS · Android · Xcode
- TGA ViewerOpen TGA files instantly and save as PNG or JPG.TGA → PNG · JPG · WEBP · BMP
What we measured
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MP3 vs OGG (Opus) vs WAV: we converted speech and musicSpeech kept its whole voice band at OGG 64 kbps, while MP3 128 kbps cut music above 16 kHz. Compared with spectrograms and size tables.
Cutting MP3 and WAV: we measured where each format really starts and endsWAV and OGG started exactly where the source did, while MP3 started 25.1 ms late and turned a 10 s range into 10.031 s. Start-position, fade and join figures plus settings by use.
MP4 vs WEBM vs MOV vs GIF: we converted a 10-second clipMP4 Standard was 15.7% of the source, while a 480 px GIF was 5.7 times larger than MP4. Size, conversion time and quality by format.
PNG vs JPEG vs WEBP: we converted a photo, a screenshot and a logoFor photos, WEBP 85% was 38% smaller than JPEG at the same setting; a transparent logo got a white box as JPEG. Compared with zooms and PSNR.
App icon sizes and safe zones: we generated 74 files from two iconsThe detailed icon blurred from 58 px, and artwork with its own background left a square edge as an Android adaptive foreground.
Thumbnail ratios and cropping: we cut a 16:9 thumbnail to 1:1, 4:5 and 9:16Centre crops cut off the title on the left. Crop coordinates by ratio, file size by format and YouTube's current recommendations.
Recent updates
Full history →- Reorganised the site: a simpler look, and every page now has its own Korean, English, Japanese and Spanish address. Fixed tip lists on six tools that showed raw <b> tags in English, Japanese and Spanish, and removed the IP-location lookup that was used to choose a language.
- Added the Audio Cutter. It decodes at the source sample rate, so cutting a 16- or 24-bit WAV and saving as WAV keeps the same sample values. Also published Cutting MP3 and WAV, where we measured start position and length by format.
- Added Video to GIF, with range selection, crop, width, fps, colour count, dithering and speed, plus a size estimate.
- Gave each language its own address for the guides.
Who makes this
Built and run by LTLT. Converter sites that need an upload are hard to trust with a meeting recording or a photo of a contract, and installing a program is a lot for a one-off job, so we made tools that the browser runs itself.
Open the Network tab of your browser’s developer tools while converting and you can see for yourself that no file is uploaded. If a result looks wrong or you need another format, tell us through Contact. Operator details are on the About page.