PNG to Base64 Converter
Convert PNG to Base64 in your browser. Free, no signup. Conversion files are not uploaded to Format Convertly servers. Learn the formats, then convert when your workflow needs Base64.
Base64 text you can embed straight into HTML, CSS or JSON.
Choose a file or drag and drop
Drop your PNG file here or
Choose file · Drag & drop · Public file link
- Processed on your device
- No conversion file stored on our servers
- Maximum file size: 100 MB
Conversion runs in your browser. Files are not uploaded to Format Convertly servers.
Format comparison
PNG → Base64
- Transparency
- Can include alpha
- No alpha channel
This is a format comparison, not a live conversion preview. Convert a file above to see the real output.
Conversion Settings
Customize the output to match your needs.
Convert Quality
92%Quality slider applies when the target is JPG, WebP, or AVIF.
Resize Image (Optional)
Advanced settings
Additional Options
- Maintain aspect ratio
- Remove metadata (EXIF)Browser re-encoding writes a new file without the original EXIF block.
How to Convert PNG to Base64
Add your PNG
Drop a PNG file into the browser panel. Nothing is sent to a remote queue.
Confirm settings
Review optional quality/size settings, then confirm Base64 as the output.
Download Base64
Convert locally and download the Base64 file when processing finishes.
Why Convert PNG to Base64?
Private by design
PNG → Base64 runs in your browser. Files are not uploaded to a remote conversion queue.
Ready for the next step
Convert when a site, editor, or teammate expects Base64 instead of PNG.
Preserve detail
Base64: None — encoding expands size ~33%. Typically lossless or lightly transformed for editing and archival use.
Transparency aware
PNG is commonly used for Screenshots and Logos and icons.
PNG vs Base64
A quick side-by-side before you convert — deeper comparison lives on the full guide.
| Feature | PNG | Base64 |
|---|---|---|
| Kind | lossless raster image | text encoding of binary data |
| Compression | Lossless DEFLATE (PNG) | None — encoding expands size ~33% |
| Lossy / lossless | Lossless / not lossy | Lossless / not lossy |
| Transparency | Supported | Not supported / N/A |
| Best for | Screenshots; Logos and icons | Data URLs in HTML/CSS; API payloads that must be text |
| Typical size | Larger than JPG for photos; excellent for graphics with flat color | Varies |
| Browser / web support | All modern browsers | Via download or conversion in modern browsers |
| Compatibility | Universal across browsers, phones, and design tools — the safest lossless web raster alongside JPG for photos | Universal in programming languages and browsers |
Choose PNG when…
- Screenshots
- Logos and icons
- UI graphics with soft alpha
- Lossless intermediates before further edits
Choose Base64 when…
- Data URLs in HTML/CSS
- API payloads that must be text
- Email-era binary transport
- Embedding small assets in JSON
What happens to image quality?
Transparency in PNG will be flattened when saving Base64. Base64 compatibility: Universal in programming languages and browsers Base64 text you can embed straight into HTML, CSS or JSON.
Tip
Keep an original copy of your PNG file if you may need to reconvert later.
Does Base64 support transparency?
Base64 does not keep transparency — Not supported / not applicable.
Base64 format guide →What happens to transparency when converting to Base64?
PNG can include alpha, but Base64 cannot. Transparent regions are flattened onto a solid background during conversion.
Base64 format guide →PNG · Base64
Related converters PNG
Related converters Base64
Frequently Asked Questions
More on quality loss: conversion quality guides · problem-solution guides
Does converting PNG to Base64 reduce quality?
Often no for lossless or remux-style paths. Quality drops when you re-encode with lossy settings, downscale, or flatten features like transparency.
Can you recover quality after converting?
Not from a lossy output alone. Return to the original master (or a better source). Converting to a lossless format does not resurrect discarded detail.
Where can I learn more about conversion quality?
Browse Format Convertly’s Quality guides for topics like whether conversion reduces quality, JPG↔PNG myths, WebP/MP3/MP4 tradeoffs, recovery limits, and generational loss — each links to the right converter.
What is a PNG file?
PNG is a lossless raster image format with full alpha transparency. PNG keeps every pixel intact and supports translucent edges — ideal for screenshots, UI, and logos. Photos are safer as JPG/WebP/AVIF when you care about download size.
Is PNG lossy or lossless?
PNG is typically lossless or non-destructive in common use (Lossless DEFLATE (PNG)).
What is Base64?
Base64 is a text encoding that represents binary data using 64 ASCII characters — common in data URLs, email attachments, and APIs. Base64 turns files into safe ASCII text for transport. It is larger than the binary original (~33%). Convert to/from Base64 when embedding assets or moving binaries through text-only channels.
Is PNG to Base64 private?
Yes. The file is processed locally in your browser and is not uploaded to Format Convertly servers.
Will quality always be perfect?
It depends on the formats. Lossy sources cannot regain discarded detail; complex documents may need cleanup after conversion.
Ready to Convert Your Files?
PNG to Base64 privately in your browser.