Free online tools, light as air.

Merge and split PDFs, compress and convert images, format JSON, count words and characters and work out dates and compound interest right in your browser. Nothing is uploaded, so your files stay on your device.

Drop a file to find a tool

PDF, image, video and more

Your file stays on your device

  • Free

    No sign-up and no watermarks.

  • Private

    Your files never leave your device.

  • Light

    Opens fast, with nothing to install.

Popular tools

The tools people reach for most, ready the moment you open them.

One place for every file job

Open a tool, finish the task, close the tab. Each one is built for a single job.

Merge and split PDF files

Merge files in the order you choose, split a PDF or delete the pages you do not need, and turn photos into a PDF or PDF pages into JPG images.

Compress images without losing quality

Shrink photos for email and the web, resize or crop them to an exact size, change PNG or WebP to JPG and turn iPhone HEIC photos into JPG, keeping the detail.

Count words and work out dates

Count the words in an essay, turn caps lock text into sentence case, find the days between two dates or see how savings grow with compound interest.

All tools by category

Every tool, grouped by what it works on. Pick one, or open a category to see them all.

Your files never leave your device

Doblique does the work inside your browser, so there is nothing to upload and nothing to trust us with.

  • Nothing is uploaded

    Files are read and changed right in your browser. They never travel to a server, not for a moment.

  • No account to make

    There is no sign-up, no email and no password. Open a tool, start work and close the tab when done.

  • No marks on your work

    What you save is exactly your file, with no watermark, no logo and no extra pages slipped in.

How Doblique works

Three steps, and your file never leaves your device.

  1. Drop in a file

    Drag a file onto the box at the top of this page, or press Choose a file. A PDF, an image or a video all work.

  2. Pick a tool

    You see only the tools that can open your file. Choose one and it opens straight away with your file added.

  3. Save the result

    The tool does its work in your browser, on your own device. Save the finished file with a single press.

Free online tools that respect your files

Doblique is a set of free online tools for everyday jobs with files, text and numbers. Merge or split PDFs, compress, resize, crop and convert images, turn iPhone photos into JPG, format JSON, count words, make QR codes and strong passwords or work out dates and compound interest with no account.

Most online tools send your files to a server before they can do anything with them. Doblique tools run inside your web browser instead, so your documents, photos and data stay on your own device from the moment you open them until you save the result.

Each tool does one job and does it well. Pages open quickly, work on phones as well as computers and never stamp a watermark on your work. New tools arrive regularly, each with a short guide, so you can finish the task and get on with your day.

Frequently asked questions

Short answers about what Doblique costs and how it handles your files.

Is Doblique really free to use?

Yes. Every tool is free to use, with no sign-up, no trial period and no watermark on the files you make.

Are online PDF tools safe to use?

Many upload your files to their servers. Doblique tools run in your browser instead, so your files are never uploaded or stored.

Do I need to create an account?

No account is needed. Open any tool and start straight away; there is nothing to sign up for and nothing to install.

Is there a limit on file size?

Most tools take files up to 100 MB each, and Split PDF and Delete PDF Pages take PDFs up to 250 MB.

Does Doblique work on my phone?

Yes. Every page works on phones and tablets as well as computers, in any modern browser such as Chrome, Safari or Firefox.

Can I use the files I make for work?

Yes. The files are yours to use however you like, at work or at home. Doblique adds no marks and keeps no copies.

Still stuck, or found a problem? Email dobliquestudio@gmail.com and we will help.