Free Browser-Based
Image Resizer, Compressor
& PDF Studio
Resize, compress, convert & batch-export images to JPG, PNG, WebP, AVIF, SVG or PDF. Clipboard paste, target-size compression, rotate & flip, background fill and batch ZIP — all 100% local.
Combine images into a PDF
Every optimized image in your queue becomes one PDF page.
Page order preview
Add images in the Optimize tab first.
Leave blank to extract every page.
Higher quality = larger image files.
Your images are processed by your own CPU. Nothing is uploaded, logged, or stored.
Built for speed. Engineered for privacy.
Other tools upload your files to a server, queue them, and send them back. We removed the server entirely — and added a complete PDF engine on top.
Zero Server Upload
Canvas & WebAssembly decode files in your tab. Your photos and PDFs never leave your device.
PDF In & Out
Build multi-page PDFs from your optimized images, or extract every page of an existing PDF back into editable pictures.
Target-Size Mode
Say "under 100 KB" and the engine binary-searches quality until each file fits.
Zero Ads, Zero Limits
No banners, no caps, no watermarks. Just one clean, keyboard-friendly interface.
Three workflows. One tool.
Pick a tab above — or press Ctrl+V to paste an image immediately.
Drop or paste
Drag images, click to browse, or hit Ctrl/Cmd+V. Thumbnails appear instantly.
Transform
Resize, rotate, flip, add background fill. Pick a social preset or exact pixels.
Compress
Slide quality, or enter a target size and let the engine find the best quality that fits.
Export
Download individual files, a ZIP of the batch, or combine everything into a PDF.
ToolGuest vs. ILoveIMG & TinyPNG
| Feature | ToolGuest | ILoveIMG | TinyPNG |
|---|---|---|---|
| Processing location | Your browser | Their servers | Their servers |
| PDF in + out | ✓ | ✓ | ✗ |
| Target-size compression | ✓ | ✗ | ✗ |
| Clipboard paste | ✓ | ✗ | ✗ |
| Live before / after | ✓ | ✗ | ✗ |
| Daily usage caps | Unlimited | Capped | Capped |
| Price | Free forever | Freemium | Freemium |
Questions, answered
No — never. Every resize, compression, format conversion and PDF build happens inside your browser using HTML5 Canvas and WebAssembly. You can disconnect from the internet after the page loads and the tool keeps working.
Two directions. "Images → PDF" combines every optimized image in your queue into a single multi-page PDF (choose Fit / A4 / Letter pages). "PDF → Images" renders each page of an existing PDF into an editable picture and drops it straight into the optimization queue.
Instead of picking a quality number, you type a target file size (e.g. "80 KB"). The engine binary-searches the highest quality that still fits under that budget — essential for email attachments and web upload limits.
Yes. Press Ctrl+V (or ⌘+V on Mac) anywhere on the page. Any image on your clipboard is added to the queue instantly.
Ctrl+V paste · Del remove selected · Esc deselect · Ctrl+Enter download ZIP.
Image resizer and compressor that runs in your browser
Images are usually the largest thing on a page, and they are usually the reason a site feels slow. Resizing them to the dimensions they are actually displayed at, and compressing them to a sensible file size, is the single most effective performance fix available. An image resizer does that work without the round-trip to a server that a hosted tool requires.
This free image resizer and compressor handles JPG, PNG, WebP, AVIF, SVG and PDF in the browser. Resize to exact dimensions or a percentage, compress to a target file size, convert between formats, and download a whole batch as a ZIP. Every step runs locally, so a client shoot, a personal photo or an unreleased product image never leaves your device.
There is no upload, no queue and no watermark. Drop in your images, set the output, and download the results, all within the tab you already have open.
An image resizer changes the dimensions and file size of images. ToolGuest resizes, compresses and converts JPG, PNG, WebP, AVIF, SVG and PDF in the browser, supports batch ZIP export and target-size compression, and never uploads your files. It is free and private.
Why resizing and compressing belongs in your workflow
Oversized images are the most common cause of a slow page. A photograph exported at four thousand pixels wide and displayed at six hundred wastes roughly twenty times the bandwidth it needs. Resizing to the display size, then compressing, is the fastest performance win on most sites.
Privacy is the second reason. Uploading client images to a conversion service means handing over the files and their metadata, which can include location and device details. Browser-based processing keeps the image, and its metadata, on your machine.
Batch handling is the third. A product catalogue or a photo gallery is never a single image. Processing a folder at once, with a consistent output size and format, keeps a whole site visually coherent and turns an afternoon of manual work into a single action.
Resize precisely
Set exact dimensions or a percentage scale, with an option to preserve aspect ratio so nothing is stretched.
Compress to target size
Choose a quality level or a target file size and the tool adjusts compression to hit it.
Convert formats
Convert between JPG, PNG, WebP, AVIF, SVG and PDF to suit the browser or the printer.
Batch and ZIP
Process many images at once and download the whole set as a single ZIP archive.
100% client-side
Resizing uses the browser's canvas and encoding APIs. Your images are never uploaded.
No watermark, no limit
Outputs carry no branding and there is no daily cap on how many images you process.
ToolGuest vs. legacy image tools
Batch processing, target-size compression and no upload, against services that take your files first.
| Capability | Legacy online tools | ToolGuest |
|---|---|---|
| Upload required | Images sent to servers | None |
| Batch processing | Often paywalled | Free |
| Target file size compression | Rarely | Included |
| Format conversion | Limited | JPG, PNG, WebP, AVIF, SVG, PDF |
| Watermarks | Common on free tiers | Never |
| Advertising | Banners and interstitials | Zero, ever |
| Offline capability | Needs a connection | Works offline |
| Signup or cookies | Third-party trackers | None |
Used by teams in the USA, UK, Germany, Canada, Australia and Spain
One English page serves every Tier-1 market, so a photographer in Lisbon and one in Denver prepare images the same way.
Photographers prepare web-ready exports without uploading client shoots.
E-commerce teams batch-resize catalogue images to consistent dimensions.
Developers compress hero images to hit performance budgets.
Marketers convert images to WebP for faster landing pages.
Small businesses prepare product photos for their online stores.
Designers export images at the exact dimensions a layout requires.
Image resizer questions, answered
How do I resize an image?
Drop your image into the tool, set the target width and height or a percentage scale, and choose whether to preserve the aspect ratio. The resized image is available to download immediately.
Does resizing reduce quality?
Resizing to a smaller size discards pixels, but done well it looks identical at the display size. The tool uses high-quality scaling, and you can choose a compression level that balances file size against fidelity.
Can I compress to a specific file size?
Yes. Set a target file size and the tool adjusts the compression quality until the output meets it, which is useful when a platform imposes a limit.
Which formats are supported?
JPG, PNG, WebP, AVIF and SVG images, plus PDF documents, with conversion between the common formats.
Are my images uploaded?
No. Resizing, compressing and converting all run in your browser using the canvas API. Your images are never transmitted, stored or logged.
Can I process several images at once?
Yes. Drop in a batch, apply the same settings to all of them, and download the results together as a ZIP archive.
Is there a size limit?
There is no imposed limit. The practical ceiling is your device's available memory, which comfortably handles full-resolution photographs in batches.
Is the tool free?
Yes. It is completely free, carries no watermark and needs no account.