MH MediaHarvester Web Context API
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PNG TO ICO

PNG to ICO Converter

Upload PNG files and convert them to ICO with batch upload, resize, quality, metadata, and ZIP download controls.

Upload and convert

PNG to ICO Converter

Free batch: 3

Step 1

Select PNG images

Step 2

ICO output settings

POST /api/image-conversion/png-to-ico/convert
More image tools

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Compress Image Reduce file size while preserving useful quality. Resize Image Change width, height, fit and output format. Rotate Image Rotate photos and graphics with clean canvas handling. Watermark Image Add branded text watermarks in one step.

Convert PNG to ICO online

Upload PNG files and convert them directly to ICO. The page opens with the upload form first, so you can begin converting immediately.

Best settings for PNG to ICO

Use the quality, resize, compression, metadata, and background controls to tune the output for web, design, archive, or document workflows.

Batch PNG to ICO conversion

Upload multiple images at once and download a ZIP package when there is more than one output file or when Force ZIP is enabled.

PNG to ICO API

Automate this conversion with POST /api/image-conversion/png-to-ico/convert. The API accepts multipart uploads and the same conversion options shown in the UI.

FAQ

PNG to ICO Converter FAQs

What is the PNG to ICO tool?

It is an online converter for creating ICO output from uploaded PNG files.

How do I convert PNG to ICO?

Upload one or more files, adjust the available options, then start the conversion and download the result.

Can I upload multiple files?

Yes. Batch uploads are supported, and multi-file results are returned as a ZIP package.

Can I control output quality?

Quality controls are available for formats that support quality-based encoding, such as JPEG, WebP, AVIF, and HEIC.

Can I resize the image during conversion?

Yes. You can set width, height, or one dimension only to preserve the original aspect ratio.

Can metadata be removed?

Yes. The remove metadata option strips image metadata before writing the converted output.

Will transparency be preserved?

Transparency is preserved when the target format supports it. For JPEG/JPG output, transparent pixels are flattened onto the selected background color.

Can I force ZIP output?

Yes. Enable Force ZIP when you want a ZIP file even for a single converted image.

Does the converter change the original file?

No. The uploaded file is read for conversion, and the downloaded result is generated as a new file.

Can I use the converted image on a website?

Yes. ICO output can be used anywhere that supports that image or document format.

Is there an API for this conversion?

Yes. Send a multipart POST request to /api/image-conversion/png-to-ico/convert with one or more files.

What happens if I upload the wrong format?

The endpoint validates the expected input format and returns an error when the file is not PNG.

Can I use this for large batches?

Free conversion supports up to three files at once. Larger batch options are available with an upgraded plan.

What filename will the output use?

The converted file keeps the original filename stem and changes the extension to the ICO output format.

Which settings should I start with?

The default settings are tuned for a balanced output. Increase quality or detail only when the use case needs it.

API and CLI

PNG to ICO Converter endpoint

POST /api/image-conversion/png-to-ico/convert
Example cURL 
curl -X POST "http://127.0.0.1:8013/api/image-conversion/png-to-ico/convert" \
  -H "X-API-Key: 1d251a33bcf2e90689dd9eac608f70c0302faccec7afaedc" \
  -F "files=@/path/to/input.png" \
  -F "quality=82" \
  -F "remove_metadata=true" \
  -o converted-output.bin
CLI 
python scripts/image_convert_cli.py png-to-ico ./input-1.png ./input-2.png \
  --base-url http://127.0.0.1:8013 \
  --api-key 1d251a33bcf2e90689dd9eac608f70c0302faccec7afaedc \
  --output ./converted