Image Developer Tools
Encode images for inline embedding without uploading files to a server.
Recommended workflow
- 1.Compress an image before Base64 so the encoded string does not bloat the document.
- 2.Use Data URIs for small assets in CSS, HTML or JSON and keep large assets as files.
- 3.Generate ICO layers from a square source, then test the favicon at 16 and 32 pixels.
- 4.Use local PDF creation when images need a fixed, shareable document layout.
Recommended tools
Image to Base64
Convert images to Base64 strings and Data URIs locally.
Single image
Live
Image to ICO Converter
Create multi-resolution ICO icons from JPG, PNG, WebP or static SVG files.
Single image
Live
Image to PDF Converter
Combine local JPG, PNG or WebP files into a one-page-per-image PDF.
Single image
Live
How to choose
- Use Base64 only when eliminating a request is worth the roughly 33% size increase.
- Use ICO for favicon bundles; it is not a general image format.
- Use PDF when pagination and document portability matter more than web payload size.
- SVG input to ICO or Base64 must be static and self-contained, without external references.
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Usage notes
- Base64 strings are about 33% larger than the original binary data.
- Data URIs work in CSS backgrounds, img src attributes and JSON payloads.
- Large images produce very long strings; consider compressing first.
Frequently asked questions
Why use Base64 for images?
Base64 embedding eliminates separate HTTP requests for small images and simplifies asset management.
Does encoding upload my image?
No. The FileReader API encodes the file locally.
Is SVG supported?
Yes. SVG files are encoded with the image/svg+xml MIME type.