uqln

File conversion that never leaves your device.

HEIC, AVIF, WebP, PDF, MP3 and more, converted inside your browser. No upload, no queue, no account, and nobody else ever sees your files.

Browse toolsHow it works
HEICPDFMP3IMG_0412.heicIMG_0412.jpg

Converters

36 tools. Zero uploads.
One drop zone.

Every converter runs on the same in-browser engine, so your files stay on your device whichever tool you pick. Choose what you're trying to do, or pick a tool directly.

Select use case

Or pick a tool directly

ImageAVIF → JPGImageAVIF → PNGImageWebP → JPGImageWebP → PNGImagePNG → JPGImageJPG → PNGImageJPEG → JPGImageJPG → WebPImagePNG → WebPImageJFIF → JPGImageJFIF → PNGImageGIF → PNGImageBMP → JPGImageBMP → PNGImageSVG → PNGImageSVG → JPGImageHEIC → JPGImageHEIC → PNGPDFHEIC → PDFPDFPNG → PDFPDFJPG → PDFPDFWebP → PDFPDFPDF → JPGPDFPDF → PNGAudioMP3 → WAVAudioWAV → MP3AudioFLAC → MP3AudioCAF → MP3AudioM4A → MP3AudioOGG → MP3AudioMP4 → MP3AudioWebM → MP3AudioMOV → MP3ImageImage compressorAudioMP3 compressorArchiveCreate ZIP file

Most used

Image/heic-to-jpg

HEIC → JPG

Convert HEIC files to JPG right in your browser.

Run it ↗Image/avif-to-jpg

AVIF → JPG

Convert AVIF files to JPG right in your browser.

Run it ↗Image/webp-to-jpg

WebP → JPG

Convert WebP files to JPG right in your browser.

Run it ↗PDF/jpg-to-pdf

JPG → PDF

Convert JPG files to PDF right in your browser.

Run it ↗PDF/pdf-to-jpg

PDF → JPG

Convert PDF files to JPG right in your browser.

Run it ↗Audio/caf-to-mp3

CAF → MP3

Convert CAF files to MP3 right in your browser.

Run it ↗Audio/flac-to-mp3

FLAC → MP3

Convert FLAC files to MP3 right in your browser.

Run it ↗Image/image-compressor

Image compressor

Make photos smaller for email, forms and websites. Processed on your device.

Run it ↗

Where your file goes

No upload. No queue. No copy on someone else's server.

Read the privacy note
uqln0 bytes
Upload-based converter: upload100% of file
…then download the result+ output size

Data sent over the network to convert one file. uqln reads and writes files locally with JavaScript and WebAssembly; the page itself is the only thing downloaded.

Under the hood

Three engines, all running in your tab.

Images01

HEIC, AVIF, WebP, JFIF, SVG and BMP decoded by your browser and re-encoded on a canvas. Batch hundreds of photos with no upload wait.

PDF02

Combine photos into one PDF, or render every page of a PDF to JPG or PNG with pdf.js and pdf-lib, the same libraries browsers use.

Audio03

CAF, FLAC, OGG, M4A and video soundtracks to MP3 with ffmpeg compiled to WebAssembly. Compress to any bitrate.

By the numbers

Built to keep your files yours

Converters that upload your files have to store them somewhere, even briefly. uqln skips that step entirely, which also makes it faster and free to run.

Tools

36

And growing every week.

File formats

20+

Images, documents and audio.

Bytes uploaded

0

Your files never leave the tab.

Accounts needed

0

No sign-up, no watermark.

Image tools

AVIF → JPG, AVIF → PNG, WebP → JPG, WebP → PNG, PNG → JPG, JPG → PNG and more.

PDF tools

HEIC → PDF, PNG → PDF, JPG → PDF, WebP → PDF, PDF → JPG, PDF → PNG.

Audio tools

MP3 → WAV, WAV → MP3, FLAC → MP3, CAF → MP3, M4A → MP3, OGG → MP3 and more.

Archive tools

Create ZIP file.