ICO to PNG Converter
Convert ICO files (released 1985 (Microsoft), Container — holds PNG or BMP frames) to PNG (Lossless, typically Larger — 2–10× JPEG for photos). Runs in your browser — no upload, no signup.
Based on 12,431+ conversions delivered
Teams convert ICO to PNG mostly for compatibility: PNG fits Screenshots, icons, logos, any image with transparency and runs on Universal (every browser since the 90s), while ICO earns its place for Favicons, Windows desktop icons, executable icons. Standardising on PNG across a pipeline — uploads, a CMS, a design system — removes the friction of mixed formats downstream. Output size depends on the resolution and content of your source image. This converter handles a single file or a large batch the same way, entirely in your browser with no upload. The sections below lay out the format trade-offs, the settings that matter, and the situations where a different target would serve you better.
Looking to programmatically convert ICO to PNG?
Same engine, available as a JSON API. Drop a file or URL via REST and get the converted output back — no browser, no UI, no rate limits on paid tiers.
Sub-second response on common pairs
Webhook delivery for batch jobs
100+ format pairs supported
ICO vs PNG — side-by-side
The numbers and capabilities at a glance, so you know what you're trading.
ICO
- Year released
- 1985 (Microsoft)
- Compression
- Container — holds PNG or BMP frames
- Transparency
- Yes
- Animation
- No
- Browser support
- Universal — every browser fetches /favicon.ico
- Best for
- Favicons, Windows desktop icons, executable icons
PNG
- Year released
- 1996
- Compression
- Lossless
- Transparency
- Yes (full alpha)
- Animation
- No (use APNG / GIF / WebP)
- Browser support
- Universal (every browser since the 90s)
- Best for
- Screenshots, icons, logos, any image with transparency
Best practices for ICO → PNG
Concrete settings to pick before you convert ICO to PNG.
- Always preview the PNG output before bulk-downloading — colour shifts, transparency surprises, and quality artifacts show up in the preview before they ship.
- Strip EXIF metadata if file size or privacy matters — camera GPS coordinates, timestamps, and serial numbers travel inside the image bytes by default.
- PNG is lossless, so quality settings don't apply — but you can still shave bytes by quantising the palette (pngquant for PNG, gif2webp for GIF) when the image has a limited colour count.
- Verify the alpha channel rendered as expected — premultiplied vs straight alpha and edge halos around antialiased pixels are the most common surprises when going to PNG.
- Re-encoding a ICO (lossless) source into another lossless format like PNG preserves every pixel, but the file size can swing in either direction with no gain in quality. If the goal is smaller files, pick a lossy target (JPEG, WebP, AVIF); if it's pixel fidelity for archival, keep the ICO original.
The importance of a good image conversion
Why getting ICO → PNG right matters more than you think.
Frequently asked
The basics everyone asks before dropping a file.
Convert ICO to other formats