File converter

Cistello's converter turns video into GIF or MP3, HEIC photos into JPG, images into PDF and CSV into Excel. Conversion happens on your own device; your files are never uploaded.

• Video: MP4, WebM, MOV, MKV, AVI, GIF and animated WebP; audio from video as MP3, M4A, WAV, FLAC, OGG, OPUS.
• Audio: between MP3, M4A, WAV, OGG, FLAC, OPUS, AAC and AIFF.
• Images: PNG, JPG, WebP, AVIF, ICO, BMP, TIFF, including iPhone HEIC photos.
• Several images into one PDF (A4 or image size).
• CSV to Excel (characters, decimal commas and dates handled) and Excel to CSV.

Are my files uploaded?

No. Conversion runs in your browser on your own device, and the site is set up so it can't send data anywhere.

How do I convert HEIC to JPG?

Drop the photo, choose JPG as the target and convert. You can also turn several photos into one PDF.

How large can a file be?

Up to 1 GB (tables 100 MB). Large videos can be slow on a phone.