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Free online tools for PDFs, images and everyday files

Convert, merge, compress, resize and sign — right in your browser, in a few seconds, with no sign-up. Your files never leave your device.

  • Free, no sign-up
  • Files are never uploaded
  • Works on phone and computer

No tools match that. Try “pdf”, “image”, “compress” or “convert” — ortell us what you were looking for.

PDF tools

6 tools

Merge, split, reorder, sign, redact and compress PDF documents.

Merge PDFJoin several PDFs into one, in the order you want.PDFs → one PDFOpen tool Split PDFPull pages out of a PDF, or break it into several files.PDF → several PDFsOpen tool Compress PDFShrink PDFs while keeping the text selectable.Large PDF → smaller PDFOpen tool Organize PDFRotate, delete, reorder, extract or split the pages of a PDF.PDF → reordered PDFOpen tool Sign & Fill PDFFill in PDF forms and add your signature, without printing anything.PDF → signed PDFOpen tool Redact PDFPermanently remove names, numbers and other private details from a PDF.PDF → redacted PDFOpen tool

Image tools

3 tools

Resize and compress pictures, or turn one into a Windows or Mac icon.

Image ResizerResize images to exact pixel dimensions or by percentage.Any size → exact pixelsOpen tool Image CompressorMake JPG, PNG and WebP files smaller with a visible preview.Big image → small imageOpen tool Icon MakerTurn any photo into a Windows .ico or Mac .icns icon, or a custom folder icon.Image → ICO / ICNSOpen tool

File converters

7 tools

Change a file from one format to another. The image converters work in both directions.

JPG to PDFCombine photos and scans into a single tidy PDF.JPG, PNG → PDFOpen tool PDF to JPGRender PDF pages as high-quality JPG images.PDF → JPG imagesOpen tool PDF to WordTurn the text of a PDF into an editable Word document.PDF → DOCXOpen tool HEIC to JPGConvert iPhone HEIC photos to JPG that opens anywhere.HEIC → JPGOpen tool PNG ↔ JPGConvert PNG to JPG or JPG to PNG — switch direction with one click.PNG ↔ JPGOpen tool PNG ↔ WebPConvert PNG to WebP or WebP to PNG, with transparency kept both ways.PNG ↔ WebPOpen tool JPG ↔ WebPConvert JPG to WebP or WebP to JPG — smaller photos or wider compatibility.JPG ↔ WebPOpen tool

Other tools

2 tools

Make a QR code for a link, or generate a strong password.

QR Code GeneratorTurn any link or text into a sharp, scannable QR code.Link → QR codeOpen tool Password GeneratorStrong random passwords built with your browser’s secure randomness.Instant strong passwordOpen tool

How it works

  1. 1Pick a tool
    Each one does one job, clearly labelled.
  2. 2Add your file
    It opens in this browser tab — nothing is uploaded.
  3. 3Download the result
    Usually within a few seconds. No watermark, no email.

Why use Klonum

Private by design

Most free converters upload your files to their servers. Klonum's tools run inside your browser, so documents and photos stay on your device.

Fast

No upload, no queue, no waiting for a server. A typical conversion finishes before an upload would have started.

Free, without catches

No account, no watermark, no daily limit and no email required to get your file.

Works everywhere

Any modern browser on Windows, Mac, Android or iPhone. Nothing to install.

Curious how it works? Every tool runs as JavaScript and WebAssembly on your own device, which is why there are no file-size caps to enforce. The only limit is your device's memory, so a very large batch is best split into smaller groups. More about Klonum.

Frequently asked questions

Is Klonum really free?

Yes, every Klonum tool is free to use, with no account, no watermark on the result and no daily limit.

Are my files uploaded anywhere?

No, Klonum does not upload your files: the tools run as JavaScript and WebAssembly inside your browser, so documents and photos are processed on your own device and never sent to a server.

Is there a file size limit?

Klonum has no fixed file size limit; the only limit is your device's memory, so a very large batch is best split into smaller groups.

Does it work on my phone?

Yes, Klonum works on phones in any modern browser, on Android and iPhone as well as Windows and Mac, with nothing to install.

Can the image converters go the other way?

Yes, every Klonum image converter works in both directions — PNG to JPG and JPG to PNG, for example — and has a Reverse link to switch.