Chrome extension

Image to Base64, ready for the web.

Frame64 converts images to Base64 data URLs, optimizes file size, resizes, crops, and compares quality, all in your browser. Your images are processed on your device and are not uploaded to a conversion server.

Add to Chrome See plans and pricing

Start with the free version, or try everything free for 14 days.

What it does

Everything between a file and a data URL.

Convert and decode

Drop, browse, or paste an image to get PNG, JPEG, or WebP output as Base64. Decode existing Base64 to preview and download the image.

Optimize file size

Resize by width, height, or exact size, adjust quality, and aim for a target file size with JPEG or WebP.

Compare quality

Compare the original and processed image with a draggable divider, synced zoom and pan, and live size numbers.

Export Studio

Generate several sizes and formats from one source, and save your export settings as recipes you can reuse.

Ready-to-paste code

Copy the result as a Data URL or raw Base64, or as HTML, CSS, JavaScript, or Markdown snippets.

Private by design

Images are processed locally in your browser. PDF pages can be converted to images locally too.

In use

Compare, export, and copy.

Select an image to open it at full size in a new tab. Screenshots show Frame64 Pro and a sample photograph.

Frame64 workspace comparing an original landscape photo with an 18% quality JPEG output 640 pixels wide, with source, output, and Base64 sizes — **See what compression costs**Drag the divider to compare the original with the processed image while the file sizes update. The example is deliberately aggressive; results depend on your image and settings.

Frame64 Export Studio with small and large WebP outputs from one source, a saved recipe, and Download images ZIP and Developer package buttons — **Create every size from one source**Generate multiple sizes and formats at once, save the settings as a recipe, and download the results as a ZIP or developer package.

Plans and pricing

Start free. Unlock the full toolkit when you need it.

The free version covers single-image conversion without an account. Frame64 Pro adds batch conversion, PDF pages, saved recipes, and developer packages. Start a 14-day trial of everything, or choose a plan.

Free

One image at a time, up to 5 MB
Unlimited basic exports
No email needed

14-day trial

$0 for 14 days

Every Pro feature
Starts when you confirm your email
Founder lifetime offer: $7.99 once, available during your trial

Monthly

$0.99 USD / month

All Pro features
Renews monthly until cancelled

Yearly

$9.99 USD / year

All Pro features
Renews yearly until cancelled

Lifetime

$15.99 USD, one time

All Pro features
No recurring payment

Prices are in US dollars as of October 6, 2026. Checkout and billing are handled by ExtensionPay and Stripe, and you can see the amount you will be billed before you pay. Install Frame64 from the Chrome Web Store.

Questions

Frequently asked questions

Are my images uploaded anywhere?

No. Frame64 converts, resizes, and compares images locally in your browser. Images are not uploaded to a conversion server.

What can I do with the free version?

Convert one image at a time, up to 5 MB, with unlimited basic exports and no email required. Batch conversion, PDF pages, saved recipes, and developer packages need an active trial or a paid plan.

How does the 14-day trial start?

The trial begins when you confirm your email through ExtensionPay, not when you install the extension, and it includes every Pro feature.

Which formats can I export?

PNG, JPEG, and WebP images, as a Data URL, raw Base64, or HTML, CSS, JavaScript, or Markdown snippets.

Help when you need it.

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