Our products

Free software that runs in your web browser. No installation, no account, and your files stay on your own device.

For everyday work

Shiklo Tools

A growing collection of more than 250 free online tools. Each one does one job well, opens in a second and works on any device. Because the tools run inside your browser, the files you open with them are never uploaded: a contract you sign, a photo you resize or a recording you convert stays with you.

PDF

Edit PDF: change existing text, add text and images
Merge, split, compress, rotate and reorder pages
Sign, annotate, redact, watermark and protect
Convert PDF to and from Word, Excel, PowerPoint and images

Images, audio and video

Convert, resize, crop and compress images
Passport photos, background removal and effects
Convert audio, for example MP3 or MP4 to WAV
Trim, merge, compress and convert videos

Calculators

Loans, savings, investments and tax
Health: BMI, calories and medical ratios
Dates, time zones, units and currencies

Text, data and developers

Word counter, text tools and case converter
JSON, CSV and XML formatters and converters
Encoders, hash and password tools, regex tester

Open Shiklo Tools See all tools

For learners

Shiklo Programming

A friendly place to learn programming. Each language has a tutorial written for complete beginners, and a full code editor with a real terminal: you type your program, press Run, and see it work, exactly as a programmer would on their own computer. Every example in the tutorials opens in the editor with one click, ready to change and run.

Languages

C: from the first program to pointers and memory
C++: classes, the standard library and more
Python: including turtle graphics, numpy, pandas and matplotlib
Rust: ownership and borrowing explained gently

Made for beginners

Short topics in plain language, with practice exercises
Error messages explained in simple words
Keyboard input, files and several source files
Works on computers, tablets and phones

Open Shiklo Programming

Coming next

We are working on bringing both products to many more languages, including Spanish, Portuguese, German, French, Japanese and Hindi, so that more people can use them in their own language. New tools and tutorials are added regularly. Have an idea for a tool or a topic? Tell us.