Convert animated GIFs to modern WebP or WebM formats with transparency support — ~10x smaller files. Shrink GIFs dramatically for modern web use — local conversion, unlimited saves.
Runs on FFmpeg
Content reviewed October 2026 · About Toolzum
Convert GIF animations to MP4 videos for drastically smaller file sizes. Content creators use this to shrink animated GIFs by up to 90% for social media, Discord, and web pages — all in your browser, nothing uploaded.
Create ZIP archives from your files right in your browser. Bundle loose files into one archive.zip with DEFLATE compression — local JSZip work, unlimited saves.
Convert between XLSX workbooks and CSV files preserving sheets and encoding. Move data across Excel and pipelines — local SheetJS work, unlimited saves.
Convert animated GIFs to WebP format for modern websites. Shrink file sizes by 60% while keeping animation and transparency intact. Everything runs locally in your browser — nothing is uploaded.
Convert one image (PNG, WebP, BMP, GIF, or any browser-decodable picture) to universal JPG at fixed quality 0.9, flattening transparency onto white. Always saves as converted.jpg — local conversion, unlimited saves.
Typically 8–12×: a 5MB reaction GIF becomes ~500KB WebP. GIF is a 1989 format with 256 colors; WebP/WebM use modern video compression on the same animation.
WebP for image contexts (img tags, chats, CMS uploads); WebM for video contexts (video tags, editing pipelines). Both keep transparency; WebM edges ahead on long clips.
Discord, Slack, and Telegram render WebP animated stickers natively. iMessage and older email clients may not — keep the GIF original when sharing to unknown apps.
At matched visual quality, no — the size saving comes from better compression, not visible degradation. Crank the quality slider until file size stops dropping, then stop.
WebP uses libwebp_anim at your 0–100 quality slider (default 80) with loop count 0–1000 (0 = infinite); WebM uses libvpx-vp9 at CRF 30. Scaling is Lanczos at original dimensions; frame rate offers Auto, 10, 15, 24, or 30 fps.
No. Conversion runs entirely in your browser. Files never leave your device.
GIF to MP4 Converter
Convert GIF animations to MP4 videos for drastically smaller file sizes. Content creators use this to shrink animated GIFs by up to 90% for social media, Discord, and web pages — all in your browser, nothing uploaded.
HTML to Image Converter
Renders pasted HTML and CSS markup (no file upload, no URL screenshots) into downloadable PNG, JPEG (fixed quality 0.95), or SVG via the html-to-image library. Preview is DOMPurify-sanitized — free to start with no signup.