ConvertorLab

Free, no sign-up, files stay on your device

Free PDF and Image Tools That Work in Your Browser

Compress a PDF to 200KB, shrink a photo to 20KB for an exam form, convert iPhone HEIC photos to JPG, or merge scans into one PDF. ConvertorLab does it all in your browser, so your files are never uploaded. No account, no watermark, no limits.

Compress PDF JPG to PDF Reduce image size in KB HEIC to JPG
ConvertJPG, PNG, WebP, HEIC, SVG, PDF CompressPDF and images to any KB size ImageResize, crop, watermark, black and white PDFMerge, split, organize, lock, unlock

The tools people open most, each one free and private.

See all 30 tools
CompressCompress PDF

Shrink any PDF to a target like 100KB or 200KB for upload forms and email.

Open tool ConvertJPG to PDF

Combine photos and scans into one PDF, in the order you choose.

Open tool CompressImage Compressor

Reduce JPG, PNG, WebP and HEIC photos to an exact KB size.

Open tool ConvertHEIC to JPG

Open iPhone photos anywhere. Batch convert to JPG, PNG or PDF.

Open tool ImageResize Image

Exact pixels, cm or inches, social media presets and a KB limit.

Open tool PDFMerge PDF

Combine several PDFs into one file in the right order.

Open tool ConvertPDF to JPG

Save every PDF page as a JPG or PNG image.

Open tool ConvertWebP to PNG

Turn WebP images saved from websites into PNG or JPG.

Open tool PDFSplit PDF

Extract pages or split a long PDF into smaller files.

Open tool PDFUnlock PDF

Remove a password you know from a bank statement or slip.

Open tool ConvertKB to MB Converter

Check a file against an upload limit in KB or MB, 1000 or 1024.

Open tool

Fit a file under an upload limit

Each page has the size already selected. Add your file and download a copy that fits.

Exact dimensions

When a form asks for pixels or centimeters, such as 3.5 x 4.5 cm, as well as a KB limit.

Resize ImageCrop Image

Why files stay on your device

Most online converters upload your file to their server, process it there and send it back. ConvertorLab works differently: the conversion code runs inside your browser, so documents like bank statements, ID cards and contracts never leave your phone or computer.

Which tool do you need?

Most file problems fall into one of three groups.

The file is too big

Compress it to the exact limit. Compress PDF and Image Compressor both let you type a size in KB and do the rest for you.

Guides

Short, practical reading for common file problems.

All guides
Compress a PDF for an upload portalCompress a PDF for an upload portalWhat to do when a form rejects your PDF for being too large.Read guide HEIC to JPG guideHEIC to JPG on Windows, Mac and iPhoneWhy iPhones save HEIC and the quickest ways to convert.Read guide JPG vs PNG vs WebPJPG vs PNG vs WebPWhich image format to use, and when.Read guide

Questions

Is ConvertorLab free?

Yes. Every tool is free to use with no sign-up, no watermark and no daily limit.

Are my files uploaded to a server?

No. The tools run in your browser using JavaScript and WebAssembly, so images and PDFs are processed on your own phone or computer. Nothing is sent to ConvertorLab.

How do I compress a PDF to 200KB or 100KB?

Open Compress PDF and choose the size in the Target size menu, or use the ready-made pages for 50KB, 100KB, 200KB, 300KB, 500KB and 1MB. The tool finds the clearest version that fits.

How do I reduce a photo to 20KB or 50KB for a form?

Open Image Compressor, or one of the Resize Image to 20KB, 50KB, 100KB or 200KB pages, add the photo and press Compress. If the form also gives pixel dimensions, set them in Resize Image first.

How do I convert iPhone HEIC photos to JPG?

Use HEIC to JPG. You can convert a whole batch at once and download a ZIP. It also converts HEIC to PNG or PDF.

Can I combine photos into one PDF?

Yes. JPG to PDF puts each image on its own page in the order you choose, with A4 or Letter pages and an optional size limit.

Does it work on mobile?

Yes. All tools work in Chrome, Safari, Edge and Firefox on Android and iPhone as well as on computers.