Image Toolkit

Compress, convert, resize for social media, batch-process, or convert images to Base64 — all in your browser. Nothing you upload leaves your device.

🖼️ Click to upload an image
JPEG, PNG, or WebP — processed instantly in your browser

Output format

Quality

80%

Original

—

Compressed

—

🖼️ Click to upload an image
Choose a platform preset or set a custom size below

Preset size

Width (px)

Height (px)

Fit mode

🖼️ Click to upload multiple images
Select several files at once — hold Ctrl / Cmd to multi-select

Output format

Quality

80%

🖼️ Click to upload an image
Get the Base64 string, an <img> tag, and a CSS snippet

Why compress and resize images before publishing?

Large, uncompressed images are one of the most common reasons a website loads slowly — and page speed directly affects both search ranking and how visitors experience a site. Compressing an image before uploading it can cut the file size by 60–90% with little to no visible difference in quality, especially when converting to WebP, a modern format built specifically for smaller file sizes on the web.

Resizing to the exact dimensions a platform expects — a 1200×630 blog featured image or a 1080×1080 Instagram post — also avoids wasted bandwidth, since browsers and apps often have to downscale oversized images anyway, at the cost of extra load time.

Frequently Asked Questions

Are my images uploaded to a server?

No. Every operation — compression, resizing, batch processing, and Base64 conversion — runs locally in your browser using JavaScript. Your images never leave your device.

What’s the difference between JPEG, PNG, and WebP?

JPEG is best for photos and supports adjustable compression. PNG is lossless and best for graphics or images needing transparency, but produces larger files. WebP typically offers the smallest file size at comparable quality and supports transparency, making it a strong default for web use.

Why does “Fill & crop” sometimes cut off part of my image?

Cover mode scales the image to completely fill the target dimensions, cropping any excess so there’s no empty space — ideal for social media covers. If you need the full image visible without cropping, use “Fit within” instead, which may add white bars to preserve the original proportions.

What is Base64 image encoding used for?

Base64 converts an image into a text string that can be embedded directly into HTML or CSS without a separate image file — useful for small icons, email templates, or quick prototypes where an extra network request isn’t ideal.