Free online tools for everyday digital tasks.
Work with PDFs, images, developer files, SEO, and documents from one organized toolkit — most of it directly in your browser, with no account required.
Featured tools
Everyday tools, hand-picked
A curated selection of the toolkit's everyday workhorses — PDFs, images, text, and developer data.
PDF Compressor
Re-serialize and optimize PDF structure in browser memory to test if file size can be reduced. Compares before and after file size with zero server uploads.
Image Compressor
Browser-side image compression that re-encodes images as compressed JPEG files. Optimize images for web use.
PDF to Word
Extract PDF text into an editable Word document. Perfect for repurposing report content without retyping.
Image Converter
Browser-side conversion of supported images to JPG, PNG, or WebP locally. Switch between formats quickly without uploading.
JSON Formatter
Format, validate, and inspect JSON instantly. Essential for debugging API responses and configuration files.
PDF Merger
Combine multiple PDF files into one ordered document. Perfect for consolidating invoices, reports, or scanned pages.
QR Code Generator
NewCreate downloadable QR codes for links and text. Generate QR codes for marketing, menus, events, and more.
Word Counter
Count words, characters, and estimated reading time instantly. Essential for writers, students, and SEO professionals.
Explore by category
Find the right tool for any task
Every category links to a topic page with its tools and guides together.
13 tools
Convert, merge, edit, and organize PDF files.
6 tools
Image
Resize, upscale, convert, and optimize images.
11 tools
SEO
Optimize content, meta tags, and site structure for search engines.
6 tools
Writing
Improve grammar, rewrite text, and generate creative content.
6 tools
Resume
Optimize resumes, cover letters, and professional profiles.
2 tools
Text
Count, transform, and improve text.
15 tools
Developer
Code, format, validate, and debug developer data.
8 tools
Finance
Plan investments, calculate taxes, and manage budgets.
Learn with ToolKitHub
Guides that explain the work behind the tools
Practical guides for using digital tools and understanding the technology behind them.
PDF Guides
Compression, conversion, merging, splitting, and document workflows — explained alongside the tools that do the work.
- How PDF Compression Actually Works: Images, Fonts, Metadata, and File Size
- How to Merge PDFs: Combine Multiple Files into One Document
- How to Split a PDF: Extract Pages or Separate a Whole Document
Image Guides
Image formats, compression, resizing, WebP, and website performance — with the Image tools right next to them.
- Best Image Formats for Fast Websites
- How to Compress Images Without Losing Visible Quality
- How to Resize Images Without Losing Quality
Developer Guides
JSON, regex, SQL, JWT, YAML, and Markdown resources for day-to-day developer work.
- JSON Formatting and Validation: A Developer's Guide to Clean Data
- Regex Tutorial: Patterns for Real-World Matching
- JWT Explained: What a JSON Web Token Actually Is
Flagship tools
Essential tools with full resource pages
Selected tools with in-depth guides, use cases, and honest privacy notes.
PDF Converter
Convert PDFs to and from Word, JPG, and image files in one place. Choose a direction, pick a file, and download the result.
Image Upscaler
NewEnlarge images in your browser with canvas-based scaling. Understand what browser upscaling can and cannot do — no uploads.
Image Converter
Browser-side conversion of supported images to JPG, PNG, or WebP locally. Switch between formats quickly without uploading.
SQL Formatter
NewFormat and beautify standard ANSI SQL queries (SELECT, JOIN, WHERE, GROUP BY, ORDER BY, CTEs, subqueries) with clean keyword indentation.
JWT Decoder
NewDecode JSON Web Tokens and inspect the header and payload contents.
Markdown Preview
NewPreview how your Markdown content will render as HTML with live conversion.
Featured guides
Understand the task before you run the tool
Curated articles that explain how compression, formats, and formats really work.
PDF / 6 min read
How PDF Compression Actually Works: Images, Fonts, Metadata, and File Size
What really makes a PDF large — and what a browser-based compressor can and cannot do about it.
Images / 5 min read
Best Image Formats for Fast Websites
When to use AVIF, WebP, PNG, and JPG for conversion workflows and SEO-friendly pages.
Developer / 5 min read
JSON Formatting and Validation: A Developer's Guide to Clean Data
Master JSON formatting, validation, and debugging with practical examples and best practices.
Developer / 5 min read
JWT Explained: What a JSON Web Token Actually Is
Header, payload, signature — and why decoding a JWT is not the same as verifying it. A security-accurate explainer.
Images / 4 min read
How to Resize Images Without Losing Quality
Resize photos and graphics to exact pixel dimensions or a percentage — and keep them sharp for web, print, and uploads.
SEO / 6 min read
Complete SEO Meta Tags Guide for 2026
Learn how to write title tags and meta descriptions that drive clicks and improve search rankings.
Why ToolKitHub
A toolkit that respects your time and your data
Browser-first processing
Most tools run entirely in your browser — no installs, no uploads, no waiting for a server. Tools that need a server-side service say so up front.
No account required
Pick a tool and start working. No sign-ups and no email walls — most tools are ready to use the moment the page loads.
Guides that explain the work
Every major tool page is paired with practical guides that explain how the format or task actually works, so you can make better decisions.
Built for real tasks
Each tool solves a specific problem — shrinking a PDF for email, converting an image format, formatting a JSON payload. Quick in, useful out.
FAQ
Frequently asked questions about ToolKitHub
Are the tools free to use?
Yes — all current ToolKitHub tools are free to use and no account is required. Individual tools may have practical limits such as browser memory or file size, and any that rely on a connected service will say so on their page.
Where does my data go when I use a tool?
Most tools process your input locally in your browser without uploading it. Tools that depend on a server-side or external service state exactly what happens before you use them. We do not store or sell your content.
Do I need to create an account to use the tools?
No account or sign-up is required. You can start using any tool instantly. Optional features like saving favorite tools are stored locally in your browser.
What types of tools are available?
ToolKitHub offers free online tools across PDF manipulation, image editing and conversion, developer utilities, SEO tools, writing assistance, resume tools, financial calculators, and more — with practical guides that explain the tasks and formats behind them.
Can I use these tools on my mobile device?
Yes. ToolKitHub is fully responsive and works on smartphones, tablets, and desktops. The interface adapts to your screen size for a smooth experience on any device.
Explore all 88 tools.
Browse the full catalog organized by category, search by name or task, and find the tool you need.
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