What does the Base64 Image Encoder do?

It turns an image into a Base64 Data URI and generates ready-to-copy HTML, CSS, Markdown, and JavaScript snippets for embedding it.

Do resizing and quality settings apply to every image type?

They apply to raster images such as PNG, JPEG, and WebP. SVG and GIF files remain unchanged so vector fidelity and animation are preserved.

Is Base64 image encoding compression or encryption?

No. Base64 is an encoding format, not compression or security, and a Data URI is usually larger than the original image.

No. Images are processed locally in your browser and are never sent to a server.

Base64 Toolbox

Encode and decode text, files and images locally with Base64, Base64URL, MIME and Data URI support

Image to Base64

Drop, browse or paste an image. Nothing is uploaded.

Resize longest edge

Leave empty for original dimensions. GIF and SVG are kept unchanged.

JPEG/WebP quality90%

Base64 Encoding Explained: What It Is and When to Use It

What Base64 actually does, why it exists, and when you should (and shouldn't) use it — covering the alphabet, padding, Base64URL, Data URIs, and common mistakes.

APCA Contrast Calculator

Calculate directional APCA 0.1.9 Lc contrast scores and compare them with WCAG 2.1 ratios.

Barcode Generator

Generate barcodes in 8 formats (CODE128, EAN13, UPC, and more) — configure line width, height, and text display, then download as SVG or PNG.

CSS Container Queries Lab

Generate CSS container queries and preview responsive component patterns

EXIF Viewer & Cleaner

View and remove EXIF metadata from images. See camera info, GPS location, and dates — then download a clean copy.

Favicon Pack Generator

Generate complete favicon packs with all standard sizes and Apple touch icons

Image Compressor

Compress JPEG, PNG, and WebP images in your browser. No uploads, completely private.