Free Online Tools — DevTet

Free Online Tools

Everything you need in one place — tools for developers, image processing, PDF documents, and business needs. Work directly in your browser, no registration, no costs.

16 free tools
No registration
Works in browser
Showing: 16 tools
Developer
QR Code Generator
Create QR codes for links, WiFi, contacts and text. Customize color and size, download as PNG.
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Developer
Password Generator
Generate cryptographically secure passwords or passphrases. Customize length, character types, and strength.
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Developer
Case Converter
Convert text to UPPERCASE, camelCase, snake_case, kebab-case, Title Case and 8 more formats.
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Developer
Color Picker & HEX
Pick a color and instantly get HEX, RGB, and HSL values. Copy code with one click.
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Developer
URL Encoder / Decoder
Encode or decode URL strings. Useful for API parameters, query strings, and special characters.
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Developer
Base64 Encoder / Decoder
Convert text or data to Base64 format and back. Ideal for API authentication and data transfer.
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Images
Image Compression
Reduce JPG and PNG file sizes without visible quality loss. Faster website loading, less storage.
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Images
Resize for Instagram
Resize image to exact dimensions for Instagram post, story, reels and profile photo.
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Images
Remove Background
Automatically remove background from images using AI. Get a transparent PNG in seconds.
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Images
YouTube Thumbnail
Download thumbnail image from any YouTube video in maximum resolution. Just paste the link.
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PDF
PDF to Word
Convert PDF document to editable Word (.docx) file. Preserves formatting, tables, and images.
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PDF
PDF Compression
Reduce PDF file size without losing quality. Ideal for email attachments or web uploads.
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PDF
PDF Merge
Combine multiple PDF files into one document. Drag and drop to reorder pages.
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Business
UTM Link Generator
Create UTM tracked links for Google Analytics campaigns. Source, medium, campaign in a few clicks.
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Business
Meta Tag Generator
Generate SEO meta tags for your website — title, description, Open Graph, and Twitter Card in one step.
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Why use DevTet online tools?

DevTet tools are designed with one goal — to save time for anyone who works with files, code, images, and documents daily. Instead of installing software, paying subscriptions, or searching for reliable tools, everything you need is available instantly, directly in your browser, with no registration required.

All tools work locally or with minimal server processing, meaning your data stays private. No tracking, no file storage, no ads asking for personal information. Just tools that get the job done.

Developer Tools

Programmers and web developers have access to tools that speed up daily tasks: a cryptographically secure password generator using the window.crypto API, Case Converter with 12 naming formats for code, Base64 and URL encoders for working with APIs, a QR code generator for quick link testing, and a Color Picker that returns HEX, RGB, and HSL values.

Image Tools

Image processing is one of the most common needs — whether you're preparing visuals for social media, optimizing images for the web, or need to remove backgrounds for presentations. DevTet offers JPG and PNG compression, resize to exact Instagram dimensions, AI background removal, and fast YouTube thumbnail downloads at maximum resolution.

PDF Tools

PDF documents are ubiquitous in the business world, and the need to process them never fades. You can convert PDF to Word, reduce file size before sending via email, or merge multiple PDFs into one document — all without installing Adobe Acrobat or similar expensive software.

Business Tools

For entrepreneurs, freelancers, and marketing teams, there are tools that simplify business communication and analytics: a PDF invoice generator, UTM link generator for tracking campaigns in Google Analytics, and a Meta Tag Generator that creates complete SEO and Open Graph tags for websites.

Frequently Asked Questions

Are all tools really free?

Yes, all tools on this page are completely free to use with no limitations. No paid plans, no watermarks on results, and no limits on usage.

Do I need to register?

No. No tool requires account creation, login, or email submission. Open the tool and start using it immediately.

Are my files and data safe?

Tools like the password generator, Case Converter, Color Picker, and URL/Base64 encoders work entirely in your browser — data never leaves your device. Tools that require file processing (compression, PDF conversion) send the file to the server only for processing and delete it immediately after.

Do the tools work on mobile?

Yes, all tools are fully responsive and work just as well on phones and tablets as on desktops.

Are you planning to add new tools?

Yes, the DevTet platform is continuously being updated. New tools are added based on user needs — if you're missing a specific tool, feel free to let us know via the contact form.

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