Image format conversion tools
Convert between JPG, PNG, WebP, HEIC, TIFF, RAW and AVIF—compatibility solved in one step.
About Format conversion
Platforms disagree about formats: application forms want JPG, design files need PNG, websites prefer WebP, and camera originals are RAW. tdd8.cn converts between all mainstream formats, with dedicated pages for long-tail cases such as HEIC to JPG, TIFF to JPG and AVIF to JPG. Conversion runs locally, so even batch jobs never queue.
FAQ
Does format conversion lose quality?
JPG→PNG is lossless with no quality loss; PNG→JPG is lossy and fills transparent areas white. For WebP you choose the quality.
How do I convert iPhone HEIC photos?
HEIC is Apple's proprietary format browsers can't read. Use the HEIC to JPG tool: the server decodes it to JPG or PNG, and the original is deleted immediately after.
Why does a transparent background turn black after JPG?
JPG has no transparency; transparent areas get filled. To keep transparency convert to PNG or WebP, or fill the background white first.