FORMATTO: free on-device image, audio, video & PDF converter
Image · Audio · Video · PDF Converter
Upload Image
Max 50MB · 50 files
JPGPNGWebPAVIFHEICGIFBMPTIFFSVGICO
Convert to what?
For JPG, WebP, AVIF.
Upload Audio
Max 500MB · 50 files · streaming >50MB
MP3WAVOGGM4AAACFLACOPUSAIFFWMA
Convert to what?
For MP3/OGG/M4A/AAC/OPUS. WAV/FLAC is ignored (lossless).
Max 500MB per file / 500MB batch. >50MB streamed via OPFS so low-end phones don't crash. Low memory: use smaller batch.
Upload Video
Max 500MB · 10 videos · streaming >50MB
MKVAVIMP4MOVWebMGIF
Convert to what?
For MP4/WebM. Lower CRF = larger file.
Lower resolution for smaller file.
For GIF only.
For MP3 extract or WebM/MP4 audio.
For vertical video fix.
Leave empty for no crop.
Overrides CRF if set.
Limit 500MB per file / 500MB batch. >50MB streamed via OPFS. GIF uses two-pass palettegen (sharper). Rotate/crop/mute work for MP4/WebM/GIF.
Image files
Images to PDF
Combine JPG, PNG, or WebP images into one PDF directly on your device.
Choose the page order before you continue. Your files stay on this device.
PDF document
PDF to images
Render every PDF page as PNG, JPG, or WebP directly in your browser.
PDF document
PDF to Word
Extract selectable text from a PDF into an editable DOCX file.
Word document
Word to PDF
Turn the text in a DOCX file into a simple, shareable PDF.
Text recognition
Scan to text
Recognize English text from a photo or the first page of a scanned PDF.
100% on device
No queue. No watermark. Processed directly on your device. Private and instant