Step 1: Provide your PNG files using the button above or by toss and let go.
Step 2: Click the 'Convert' button to start the conversion.
Step 3: Fetch your converted ICO files.
PNG to ICO Conversion FAQ
How do I convert PNG to ICO without losing image quality?
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Upload your PNG file and our converter applies format-aware quality optimization for ICO output. For lossless targets (PNG, TIFF, BMP) every pixel is preserved bit-for-bit; for lossy targets (JPG, WebP) you can tune the quality factor (default 90) before download. PNG uses DEFLATE compression over filtered scanlines, so every pixel survives exactly, plus a full 8-bit alpha channel. A single ICO holds several renderings of the same icon at different sizes — 16x16 through 256x256 — so the OS can pick the sharpest one.
What sizes should the ICO contain?
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Include 16x16, 32x32, 48x48 and 256x256 and you have covered every context Windows and browsers ask for. A single ICO holds all of them, so the operating system picks the nearest match instead of resampling one size down and making it mushy. Start from a square PNG — anything else gets letterboxed or cropped.
Is anything lost converting between PNG and ICO?
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No pixel data, no. Both formats store the image without lossy compression, so the picture that comes out is identical to the one that went in and the conversion can be repeated indefinitely. What changes is file size, and which features travel — colour depth, embedded profiles, layers and animation are all supported unevenly between lossless formats.
Does PNG to ICO conversion preserve transparency?
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Transparency survives when ICO is PNG, WebP, TIFF, GIF, or SVG. Converting to JPG flattens the alpha channel against a white background — if you need transparency, pick a transparency-aware target instead of ICO. ICO is the Windows icon format, and it is the only image format browsers will accept at /favicon.ico.
Will my colour profile (sRGB / Adobe RGB / CMYK) survive PNG to ICO?
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Embedded ICC colour profiles are read from the source PNG and re-attached to the ICO output where the format supports it (JPG, PNG, TIFF, WebP). Formats without profile support fall back to sRGB with a soft-proof step.
What happens to EXIF metadata when converting PNG to ICO?
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Camera EXIF (ISO, shutter, lens, GPS) is preserved by default during PNG -> ICO when both formats support metadata. Use the privacy toggle to strip metadata before download if you want to share images without geolocation or device-fingerprint exposure.
Can I batch-convert hundreds of PNG files to ICO at once?
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Yes — drag multiple PNG files into the upload zone and they queue in parallel. Free tier accepts 100 MB per file; Premium has no per-file cap and runs more parallel workers, so a 200-image batch typically finishes in under two minutes.
How does PNG to ICO compare to Photoshop / GIMP for the same task?
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For straightforward format conversion we run the same libpng / libjpeg-turbo / libwebp / ImageMagick pipelines a desktop editor uses, at the same quality. The difference is that desktop tools open one file at a time; we accept a batch and run them in parallel on server-side workers.
What resolution and dimensions does the ICO file have?
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Default behaviour is 1:1 — your ICO output has the same pixel dimensions as the source PNG. If you need to resize as part of the conversion, use /resize-image/ after, or chain the operations with the /image-pipeline/ utility.
How small can the ICO file get without visible artifacts?
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For JPG / WebP, quality 75-85 typically yields an ICO 60-80% smaller than the PNG with no visible difference at normal viewing distance. For lossless ICO (PNG, TIFF), expect smaller savings — usually 5-30% via better deflate / LZW compression than the source already had. ICO lets one file serve a taskbar, a file listing, a desktop shortcut and a browser tab without any of them looking resampled.
Are my PNG files private during conversion?
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Yes — uploaded PNG files are processed in isolated workers and deleted within minutes. We never read, store, or share the pixel data. The full retention window is documented at /privacy/.
Does the PNG to ICO converter work for very large images (50MP+)?
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Yes for free up to 100 MB. Premium handles much larger inputs (300 MB+) and exotic per-pixel depths (16-bit PNG, 32-bit float TIFF, HEIF 10-bit). The pipeline streams pixel rows so memory use scales with row count, not total pixel count.
