Converts JPEG files to PNG format — photographs, web images, and social media where smaller file size matters more than perfect quality to graphics with sharp edges, text overlays, screenshots, and images requiring transparent backgrounds. All conversion happens locally in your browser with no file size limits.
Runs on Canvas
Content reviewed October 2026 · About Toolzum
Shrink JPG, PNG, and WebP photos with an Image Quality slider (10–100%, default 80%) plus a Resolution Scale slider, shown in Before/After panels with exact KB and -% savings. Single-image uploads up to 50MB — local library work, unlimited saves.
Convert TIFF scans and archives to universal PNG for viewing and editing anywhere. Open press files on any device — local Canvas work, unlimited saves.
Convert JPG photos to modern WebP at ~30% smaller sizes for faster websites. Optimize entire image libraries before deploy — local Canvas work, unlimited saves.
Design simple logos with text, tagline, and 5 preset icons on canvas — export PNG/SVG. Draft startup marks in an afternoon — local Canvas work, unlimited saves.
Convert WMA to FLAC for lossless Windows-library archival. Escape legacy codecs without further loss — local FFmpeg work, unlimited saves.
JPEG (Joint Photographic Experts Group) uses lossy compressed encoding and is best for photographs, web images, and social media where smaller file size matters more than perfect quality. PNG (Portable Network Graphics) uses lossless encoding and excels at graphics with sharp edges, text overlays, screenshots, and images requiring transparent backgrounds. Converting between them lets you take advantage of each format's strengths — for example, using a compressed format for sharing and a lossless format for editing. All conversion happens locally in your browser with no file size limits.
No — PNG preserves exactly what the JPG held, blocking further degradation through edit cycles. Convert once at workflow start, not repeatedly.
Graphics with text, screenshots, and transparency work — plus any multi-save editing pipeline. Photos for web stay JPG/WebP for size.
Expect 3–5x larger files — PNG compression can't undo JPEG entropy. A 500 KB photo becomes ~2 MB PNG; normal and worth it for editing.
No — conversion runs locally in your browser on Canvas. Saves never touch a meter — downloads on local tools are unlimited.
PNG to JPG
Convert PNG images to JPG format in your browser. Photos never leave your device — processing runs locally in your browser with Canvas and WebAssembly.
Bulk Image Format Converter
Convert image batches between JPG, PNG, WebP, and AVIF outputs (JPEG/PNG/WebP/AVIF/HEIC/HEIF/GIF/BMP/ICO/SVG inputs; HEIC via heic2any, SVG rasterized at intrinsic size or 1024px fallback) with a quality slider (10–100, default 80). Pair pages (?from/?to) preset the output. Flat ZIP renamed per file — local, 5-file guest batches, 25 signed-in, 500 Pro.
Image Format Converter
Convert one browser-decodable image to PNG, JPG, or WebP — the only outputs canvas can encode. HEIC/SVG/JXL/TIFF and other exotic targets fail honestly instead of pretending. Nothing is uploaded; every conversion runs in your browser.