22 tools live · more shipping weekly

All your online tools in one place.

A growing productivity toolkit for PDFs, images, developers and everyday tasks. No signups, no uploads — everything runs in your browser.

Press / to focus · find tools, guides and more

Merge PDF Password Generator QR Code Generator JSON Formatter Image Compressor

Popular tools

View all →

Handpicked, most-used utilities on ToolStack.

Word to PDF

Convert DOCX to PDF

Password Generator

Ultra-strong, memorable passwords

QR Code Generator

Text, URL & WiFi QR codes

UUID Generator

v4 UUIDs & random IDs

Age Calculator

Exact age, Gregorian & Hijri

Password Strength

Test how strong a password is

Browse by category

A tool for every job — from PDFs to code.

PDF Tools

Merge, split, compress and convert PDF files.

2 tools
Image Tools

Compress, resize and convert images.

2 tools
Generators

Passwords, QR codes, UUIDs and more.

3 tools
Text Tools

Count words, format and transform text.

3 tools
Developer Tools

JSON, Base64 and encoders for developers.

3 tools
Converters

Convert between document and file formats.

3 tools
Calculators

Dates, ages and everyday math.

3 tools
Security Tools

Passwords, hashing and safety checks.

2 tools
SEO Tools

Meta tags, sitemaps and SEO helpers.

1 tool

Smart Password Generator

Personal keywords + strong entropy = passwords you actually remember.

Strong by design

A random mix of letters, numbers and symbols scored by a live strength meter.

Runs in your browser

Nothing you type is ever sent to a server — full privacy by default.

Instant variations

Cycle new variants with one click, then copy in a tap.

Open Password Generator

Recent Articles

Tips, guides and product news.

25 July، 2026 7 Fixes for Merge PDF Not Working Merge pdf not working is a common issue — quick overview Merge pdf not working can halt a… 25 July، 2026 7 Steps to Merge PDF Step by Step merge pdf step by step: Quick Overview merge pdf step by step is simpler than most people expect.… 25 July، 2026 Merge PDF Safe Online: 7 Tips to Protect Files Merge pdf safe online is a common concern for anyone combining documents. Merging PDF files is a routine…

Frequently Asked Questions

Everything about ToolStack.

Are ToolStack tools really free?

Yes. Every tool on ToolStack is 100% free with no sign-up, no watermarks and no daily limits. The site is supported by ads.

Do you upload my files to a server?

Only when a tool genuinely needs server processing (like Word to PDF), and those files are encrypted in transit and auto-deleted within one hour. Tools like the password and QR generators run entirely in your browser and send nothing.

How does the Smart Password Generator work?

It mixes personal memory anchors you provide (a keyword, a favourite number) with strong cryptographic randomness, so the result is both easy to remember and hard to guess. It never uses your raw personal data as the password.

Can I use ToolStack on mobile?

Absolutely. Every tool and page is fully responsive and works in any modern browser on phones, tablets and desktops.