SquishConvert
For Web Developers

Image Optimization Tools for Web Developers

Image weight is the number one cause of slow Largest Contentful Paint scores. You know you should be serving WebP and AVIF, compressing aggressively, and lazy-loading everything — but the conversion step is always a friction point. SquishConvert gives you fast format conversion, precise compression controls, and batch processing so you can ship performant sites without a custom build pipeline.

Common file headaches for web developers

Client hands off 50 uncompressed PNGs at 5 MB each and expects the site to score 95+ on Lighthouse
Setting up a proper image build pipeline with Sharp or ImageMagick takes time you don't have on every project
Browser support for AVIF is great now, but generating AVIF files locally is painfully slow
Legacy projects have hundreds of unoptimized images and no automated pipeline in place

Workflows built for you

Convert to WebP/AVIF for production

Convert all site images to modern formats for dramatically smaller file sizes and better Core Web Vitals.

File ConversionBatch Processing
  1. 1Upload your JPG/PNG source images
  2. 2Select WebP or AVIF as the target format
  3. 3Batch process the entire image directory
  4. 4Download and drop into your project's public folder

Compress images for Lighthouse score

Reduce image file sizes to pass Lighthouse audits and improve LCP without visible quality loss.

Image Compression
  1. 1Upload the images flagged by Lighthouse
  2. 2Adjust compression quality (70-80% is usually the sweet spot)
  3. 3Compare file sizes before and after
  4. 4Replace the originals and re-run your audit

Batch optimize legacy project images

Process an entire legacy project's unoptimized image folder in one go.

Batch ProcessingImage CompressionFile Conversion
  1. 1Export the images directory from your project
  2. 2Upload all files to SquishConvert
  3. 3Convert to WebP and compress in one pass
  4. 4Download the ZIP and replace the originals

Features web developers love

WebP and AVIF conversion
Precise compression quality controls
Batch processing with ZIP output
Client-side conversion for instant results
No dependency installation required
Works with any framework — Next.js, Astro, Nuxt, etc.
"I dropped 4 MB of images down to 400 KB by batch converting to WebP. My client's LCP went from 4.2s to 1.1s. I use this on every project now instead of setting up a Sharp pipeline."

— Tom Andersen, Freelance Frontend Developer

Ready to simplify your file workflow?

Try SquishConvert for free. No signup required for basic conversions.

Get started freeSee pricing

More use cases

Photographers

Convert RAW to JPG, batch resize photos, compress images for the web, and remove backgrounds for product shots. All the tools photographers need in one place.

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E-commerce Sellers

Remove product photo backgrounds, compress images for fast page loads, batch resize for marketplaces, and convert HEIC photos from your phone. Built for online sellers.

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Students

Convert documents for assignments, compress PDFs for email, extract text from scanned notes with OCR, and protect your thesis with PDF encryption. Free to start.

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Social Media Managers

Resize images for every platform, compress files for faster uploads, convert video to GIF, and batch process content for scheduled posting. Built for social media teams.

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