Convert or shrink a file in about four seconds
No signup, no watermark, no file kept. Most image conversions finish right here in your browser.
Ten files, mixed formats
Photos, screenshots, a contract. Each keeps its own output format, and duplicates are spotted by content rather than filename.
Every file says its path
Common image conversions run in this tab. HEIC, documents, PDFs, GIFs and all compression go to the server, are held in memory, and are discarded.
One file or the whole batch
Download each result as it lands, or take everything as a single ZIP. Nothing is stored once you have it.
Straight to the one you need
19 pagesWhere your files are processed
Half of what this site does never reaches us. JPG, PNG, WEBP and SVG converting to JPG, PNG or WEBP run on your own machine, through the same canvas engine your browser already uses to draw every image on the web. There is no upload to wait through and nothing is counted against the daily limit.
The other half needs decoders a browser does not ship, so HEIC, Word documents, every PDF and GIF, and all compression come to the server, are held in memory, and are discarded the moment your download starts. The about page names the engine behind each format.
Frequently Asked Questions
Is SwiftConverter really free?
Yes, 100% free. No signup, no watermarks. You get 20 files per day shared across converting and compressing, up to 10 files at once in bulk, with a 25MB file size limit.
Are my files safe?
Most image conversions run in your browser and are never uploaded at all. The rest, HEIC and HEIF, Word files, every PDF and GIF, and all compression, are processed in server memory and discarded the moment your download starts. Nothing is stored, logged, or shared. Check our Privacy Policy for details.
What file formats are supported?
Convert: HEIC, HEIF, JPG, PNG, WEBP, SVG, DOC, DOCX. Compress: JPG, PNG, WEBP. Maximum file size is 25MB per file.
Can I process multiple files at once?
Yes. Add up to 10 files per batch. They process one at a time and you can download them individually or all at once as a ZIP file.
Why is the converted PNG larger than my HEIC?
HEIC uses lossy compression (like JPEG) while PNG is lossless. The quality is preserved perfectly, but lossless formats produce larger files. Try WEBP for a good balance of quality and size.