Compress, convert, resize, watermark and analyse images without uploading them to any server. All processing happens in your browser using WebAssembly and the Canvas API.

Web developers

Compress images before deploying to reduce page weight, improve Core Web Vitals, and pass PageSpeed audits.

Content creators

Resize and format images for social media, blogs, and email newsletters without Photoshop.

Privacy-conscious users

Process sensitive images - IDs, medical documents, personal photos - without uploading them anywhere.

Designers

Convert between formats, extract colour palettes, and compare image versions side by side.

Image editing SaaS tools charge subscriptions for basic operations any modern browser can perform natively. We use Web APIs so your files never leave your device.

About Image Tools

Free online image tools that run entirely in your browser - no file uploads to external servers, no account required, no file size limits imposed by server costs. Compress JPEGs and PNGs using industry codecs, convert between WebP, AVIF, JPG, PNG, and SVG, resize and crop images to exact pixel dimensions, remove backgrounds with AI, rotate and flip, add watermarks, extract colour palettes, and compare images with pixel-level diff. Every tool processes your images locally using the browser's Canvas API or WebAssembly - your images stay on your device.

When to use Image Tools

1Before uploading images to your website: compress with the Image Compressor to reduce file size by 50–80% before publishing - directly improving Core Web Vitals LCP scores.
2When building for the web: convert PNG or JPG images to WebP or AVIF format, which provide 25–50% smaller file sizes at equivalent visual quality.
3E-commerce product photography: resize batches of product images to consistent dimensions, remove backgrounds, and watermark with your brand before listing.
4Design workflows: extract the dominant colour palette from a photo or logo, or compare two versions of an image to spot differences before publishing.
5Social media content: resize images to the correct dimensions for each platform (1200×630 for OG/Twitter, 1080×1080 for Instagram, 9:16 for Stories).

Frequently Asked Questions

Are my images uploaded to a server when I use these tools?+

No. All image processing happens locally in your browser using the Canvas API and WebAssembly. Your images never leave your device and are never uploaded to Searchlight's servers. This makes the tools safe for confidential and watermarked images.

What is the difference between lossy and lossless compression?+

Lossy compression (JPEG, WebP lossy, AVIF) permanently removes some image data to achieve smaller file sizes - quality 80–85 is typically indistinguishable from the original. Lossless compression (PNG, WebP lossless) reduces file size without any quality loss by encoding pixel data more efficiently.

Should I use WebP or AVIF for my website images?+

AVIF offers better compression than WebP (up to 50% smaller than JPEG at equivalent quality) but has slightly less browser support. WebP is supported by all modern browsers. The best practice is to serve AVIF with a WebP fallback using the HTML picture element with source elements.

How do I reduce image size without losing quality?+

For JPEGs: use quality 80–85 in the Image Compressor - most people cannot distinguish this from the original. For PNGs with transparency: convert to WebP lossless for a 20–30% reduction. For photos: convert to AVIF at quality 60–70 for dramatic size reductions that look identical on screen.

Free Image Tools That Run Entirely in Your Browser

Compress, convert, resize, watermark and analyse images without uploading them to any server. All processing happens in your browser using WebAssembly and the Canvas API.

Web developers

Compress images before deploying to reduce page weight, improve Core Web Vitals, and pass PageSpeed audits.

Content creators

Resize and format images for social media, blogs, and email newsletters without Photoshop.

Privacy-conscious users

Process sensitive images - IDs, medical documents, personal photos - without uploading them anywhere.

Designers

Convert between formats, extract colour palettes, and compare image versions side by side.

Image editing SaaS tools charge subscriptions for basic operations any modern browser can perform natively. We use Web APIs so your files never leave your device.

About Image Tools

When to use Image Tools

1Before uploading images to your website: compress with the Image Compressor to reduce file size by 50–80% before publishing - directly improving Core Web Vitals LCP scores.

2When building for the web: convert PNG or JPG images to WebP or AVIF format, which provide 25–50% smaller file sizes at equivalent visual quality.

3E-commerce product photography: resize batches of product images to consistent dimensions, remove backgrounds, and watermark with your brand before listing.

4Design workflows: extract the dominant colour palette from a photo or logo, or compare two versions of an image to spot differences before publishing.

5Social media content: resize images to the correct dimensions for each platform (1200×630 for OG/Twitter, 1080×1080 for Instagram, 9:16 for Stories).

Frequently Asked Questions

Are my images uploaded to a server when I use these tools?+

What is the difference between lossy and lossless compression?+

Should I use WebP or AVIF for my website images?+

How do I reduce image size without losing quality?+