Knowledge Centre - Online Tools
8 Best Free Online Tools in 2026 (That Are Actually Free)Eight genuinely free online tools for design, photo editing, PDFs, images, diagrams and online security, with no trial traps.
Bitwarden Free Review: The Best Free Password Manager?Bitwarden's free plan gives you unlimited passwords on unlimited devices, and it's open source. Here's how to set it up and what Premium adds.
Canva Free Plan: What You Get and How to Make the Most of ItCanva's free plan covers social posts, presentations, posters and video with thousands of templates. Here's what's free, what's Pro, and tips to design faster.
Coolors: The Free Colour Palette Generator for Brands, Slides and WebsitesCoolors generates beautiful colour palettes with one key press, pulls palettes from photos and checks contrast. Here's how to use it for your brand, slides or website.
CyberChef: GCHQ's Free 'Cyber Swiss Army Knife' ExplainedCyberChef, made by GCHQ, decodes Base64, converts formats, generates hashes and much more, all in your browser. Here's how beginners can use it.
diagrams.net (draw.io): Free Flowcharts and Network Diagramsdiagrams.net, also known as draw.io, is a free, open-source tool for flowcharts, network diagrams, org charts and more. Your files are saved where you choose.
Excalidraw: The Free Online Whiteboard for Quick, Beautiful DiagramsExcalidraw is a free, open-source whiteboard with a hand-drawn look, live collaboration and no sign-up. Here's how to get the most from it.
Have I Been Pwned: How to Check if Your Email Was in a Data BreachHave I Been Pwned is a free service that tells you whether your email address has appeared in a data breach. Here's how to check, and what to do next.
Jitsi Meet: Free Video Calls with No Time Limit (Open Source)Jitsi Meet is a free, open-source video calling service that runs in your browser. Guests don't need an account. Here's how to host a call.
LanguageTool: A Free Grammar Checker That Speaks British EnglishLanguageTool checks grammar, spelling and style in over 30 languages, including British English, in your browser, Word and Google Docs. Here's how to set it up.
PDF24 Tools: The Free PDF Toolbox With No Limits or WatermarksPDF24 Tools lets you merge, split, compress, convert, OCR and sign PDFs for free, with no sign-up and no watermarks. Here's how it works.
Photopea Review: The Free Photoshop Alternative That Runs in Your BrowserPhotopea is a free, browser-based image editor that opens PSD files and feels like Photoshop. Here's what it does, how to start, and whether it's enough for you.
Squoosh: The Free Image Compressor Every Website Owner Should BookmarkSquoosh compresses and resizes images in your browser with a live before/after slider. It's free, open source and private. Here's how to use it.
Tinkercad: Free 3D Design and Arduino Circuits in Your BrowserTinkercad is Autodesk's free browser app for 3D design and simulating Arduino circuits. Perfect for beginners, schools and 3D printing. Here's how to start.
Unsplash: Free High-Quality Photos You Can Use CommerciallyUnsplash offers millions of high-resolution photos that are free to use for commercial and personal projects. Here's what the licence allows and how to find great images.
VirusTotal: How to Check if a File or Link Is Safe (Free)VirusTotal scans files and URLs with around 70 antivirus engines at once, for free. Here's how to use it and how to read the results.
Wayback Machine: How to See Old or Deleted Web Pages (Free)The Wayback Machine lets you see old versions of websites and read pages that have been deleted. Here's how to use it, save pages yourself, and find what you need fast.
Wokwi: Simulate Arduino, ESP32 and Pico Projects Online for FreeWokwi is a free online simulator for Arduino, ESP32 and Raspberry Pi Pico. Wire up parts, run real code and even test Wi-Fi, all in your browser.
Wormhole: Send Large Files Securely for Free (No Account)Wormhole lets you send files up to 10 GB with end-to-end encryption and links that expire automatically. No sign-up. Here's how it works.
