Converts PNG files to ICO format — graphics with sharp edges, text overlays, screenshots, and images requiring transparent backgrounds to favicons and app icons. All conversion happens locally in your browser with no file size limits.
Runs on Canvas
Content reviewed October 2026 · About Toolzum
JPG to ICO output is not produced here — browsers have no ICO encoder, so Canvas conversion fails locally instead of downloading. Convert JPG to PNG/JPG/WebP instead — local, unlimited saves.
PNG to BMP output is not produced here — browsers have no BMP encoder, so Canvas conversion fails locally instead of downloading. Convert PNG to PNG/JPG/WebP instead — local, unlimited saves.
PNG to TIFF output is not produced here — browsers have no TIFF encoder, so Canvas conversion fails locally instead of downloading. Convert PNG to PNG/JPG/WebP instead — local, unlimited saves.
Generate favicon packages — PNG icons plus Apple touch icons — from one image. Note: the .ico file is PNG data renamed (modern browsers only). Ship every platform icon in one pass — local generation, 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.
PNG (Portable Network Graphics) uses lossless encoding and is best for graphics with sharp edges, text overlays, screenshots, and images requiring transparent backgrounds. ICO (Windows Icon) uses lossless (multiple sizes) encoding and excels at favicons and app icons — standard format for website bookmarks and Windows application icons. 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.
Canvas cannot encode ICO, so the run ends in Conversion failed with no file written. Convert PNG to PNG, JPG, or WebP for a working download.
Moot — no ICO is emitted from PNG input, so no size set builds. Convert PNG to PNG for icons and favicons instead.
For PNG sources: PNG for exact pixels, JPG for photos at fixed 0.92, or WebP at 0.85 — every one encodes locally with unlimited saves.
No — the attempt runs locally in your browser and fails before any save. Local-tool downloads stay unlimited.
ICO to PNG
Convert ICO favicons to editable PNG in your browser — extract icon artwork at full embedded size for reuse in any editor.
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.