About Toolzilla

Our Story

Toolzilla was born out of a simple frustration: why do so many free online tools make you create an account, upload your private files to unknown servers, or hit a paywall after just one or two uses?

We set out to build something different — a collection of genuinely free, genuinely private file tools that work entirely inside your browser. Your files never leave your device. There are no accounts, no limits, and no surprise fees. Just upload, convert, and download.

What started as a single Word-to-PDF converter has grown into a suite of 77 free tools across ten categories — documents, images, writing, calculators, developer utilities, media, design & brand, security & privacy, productivity, and business & legal — with more on the way. We are passionate about building tools that are simple enough for anyone to use and powerful enough for professionals who need them every day.

Our Mission

Our mission is straightforward: make professional-grade file tools accessible to everyone, everywhere, for free.

Whether you are a student converting an assignment, a small business owner preparing a contract, a freelancer signing a document, or a teacher compiling a lesson plan — Toolzilla is built for you. We believe that access to essential digital tools should not depend on your budget, your country, or your technical skill level.

What Makes Us Different

Our Tools

Toolzilla currently offers 77 free tools across ten categories. Open any section below to browse tools on that page.

📄 Document & File Tools — 9 free tools

Convert, merge, split, compress, and sign PDF and document files — all processed locally in your browser.

• Word to PDF — Convert .doc and .docx files to PDF instantly.
• PDF to Word — Extract text from PDF documents into an editable format.
• PDF Merger — Combine multiple PDF files into a single document.
• PDF Splitter — Extract specific pages or page ranges from a PDF.
• PDF Compressor — Reduce PDF file size without losing quality.
• Excel to PDF — Convert .xlsx / .xls spreadsheets to PDF for easy sharing.
• PPT to PDF — Convert PowerPoint presentations to PDF format.
• PDF ↔ JPG — Convert PDF pages to images or images back to PDF.
• eSign / PDF Filler — Draw your signature and apply it directly to any PDF.

🖼️ Image Tools — 7 free tools

Compress, resize, convert, crop, rotate, watermark and apply effects to images — all in your browser.

• Image Compressor — Reduce JPG, PNG and WebP file sizes without visible quality loss.
• Image Resizer — Resize images by exact pixel dimensions or percentage scale.
• Format Converter — Convert images between JPG, PNG and WebP formats.
• Image Cropper — Crop to custom dimensions or social media presets (1:1, 16:9, 9:16, 4:3).
• Rotate & Flip — Rotate 90°, 180°, 270° or flip horizontally and vertically.
• Watermark Tool — Add custom text watermarks with position and colour control.
• Grayscale & Effects — Convert to black & white, sepia tone, or invert colours.

✍️ Text & Writing Tools — 14 free tools

Word counting, text transformation, cleaning, and writing utilities — all in your browser.

• Word Counter — Count words, characters, sentences, paragraphs, and estimated reading time.
• Reading Time Estimator — Calculate how long your content takes to read at slow, average, and fast pace.
• Keyword Density Analyser — Find the most-used words and their frequency percentage — essential for SEO writers.
• Case Converter — Convert text to UPPERCASE, lowercase, Title Case, camelCase, snake_case, and more.
• Text Reverser — Reverse character order, word order, or reverse each individual word.
• Slug Generator — Convert any title or phrase into a clean, SEO-friendly URL slug instantly.
• Duplicate Line Remover — Remove duplicate lines from any list with case-sensitive and blank-line options.
• Text Sorter — Sort lines alphabetically A–Z or Z–A, by length, or shuffle randomly.
• Whitespace & Format Cleaner — Remove extra spaces, blank lines, tabs, and line breaks from copied text.
• Find & Replace — Find and replace text across any block with case-sensitive and whole-word options.
• Lorem Ipsum Generator — Generate placeholder text by words, sentences, or paragraphs for design mockups.
• Text to Bullet Points — Convert paragraphs into bullet points, or convert bullet points back to paragraphs.
• Number to Words — Convert any number into written words — for invoices, legal documents, and cheques.
• Text Diff / Compare — Compare two texts side by side and highlight exactly what was added or removed.

🧮 Calculator & Converter Tools — 13 free tools

Instant calculations and unit conversions — all in your browser, no uploads needed.

• Percentage Calculator — Calculate X% of Y, percentage change, and percentage difference.
• Loan / EMI Calculator — Monthly payment, total interest, and full amortisation breakdown.
• Age Calculator — Exact age in years, months, and days from any date of birth.
• BMI Calculator — Body Mass Index with metric and imperial support and health category.
• Length Converter — mm, cm, m, km, inch, foot, yard, mile conversions.
• Weight Converter — mg, g, kg, tonne, oz, lb, stone conversions.
• Temperature Converter — Celsius, Fahrenheit, and Kelvin instant conversion.
• Area Converter — sqm, sqft, sqkm, acre, hectare conversions.
• Speed Converter — km/h, mph, m/s, knots, and ft/s conversions.
• Volume Converter — ml, litre, gallon, cup, pint, fl oz conversions.
• Data Storage Converter — Bytes, KB, MB, GB, TB, and PB conversions.
• Calorie Burn Calculator — Calories burned per activity based on weight and duration.
• Scientific Calculator — Full calculator with trigonometry, logarithms, and square root.

💻 Developer / Tech Tools — 11 free tools

Essential utilities for developers and tech professionals — all running locally in the browser.

• JSON Formatter / Validator — Format, minify and validate JSON with syntax error detection.
• HTML Encoder / Decoder — Encode special characters to HTML entities and back.
• Regex Tester — Test regular expressions with live match highlighting and flag control.
• IP Address Lookup — Instantly fetch and display your current public IP address.
• CSS Minifier — Remove whitespace and comments from CSS for faster page loading.
• JS Minifier — Minify JavaScript code for production use.
• Hash Generator — Generate SHA-1, SHA-256, SHA-384 and SHA-512 hashes from any text.
• Unix Timestamp Converter — Convert Unix timestamps to readable dates and vice versa, with live clock.
• JWT Decoder — Decode JSON Web Tokens and inspect header, payload, and expiry status.
• Markdown Preview — Write Markdown and see formatted HTML rendered live side by side.
• Dummy Data Generator — Generate realistic dummy data in JSON, CSV and SQL formats.

🎬 Media Tools — 4 free tools

Media utilities for content creators and developers — thumbnails, encoding, screen info, and photo metadata.

• YouTube Thumbnail Downloader — Download any YouTube video thumbnail in all available sizes.
• Image to Base64 — Convert images to Base64 encoded strings for embedding in HTML and CSS.
• Screen Resolution Checker — View your screen resolution, viewport size, DPI, and colour depth.
• Image Metadata / EXIF Viewer — View metadata and EXIF information embedded in JPEG photos.

🎨 Design & Brand Tools — 4 free tools

Colour, favicon, and social preview tools for websites, brands, and creators.

• Colour Palette Extractor — Upload any image to extract its dominant colours as HEX codes.
• Favicon Generator — Generate favicons in all standard sizes (16, 32, 48, 64, 128, 180px) from any image.
• Social Media Card Previewer — Preview how your webpage title and description appear when shared on social media.
• Color Picker / Converter — HEX, RGB, and HSL colour conversion with visual picker.

🔐 Security & Privacy Tools — 3 free tools

Password and encoding utilities that run locally — nothing you enter is sent to our servers.

• Password Generator — Generate secure random passwords with custom length and character rules.
• Base64 Encoder / Decoder — Encode plain text to Base64 or decode Base64 strings back to readable text.
• URL Encoder / Decoder — Encode special characters for URLs or decode percent-encoded URL strings.

📅 Productivity Tools — 2 free tools

Date and time helpers for planning, deadlines, and working across time zones.

• Date Difference — Days, weeks, months and years between any two dates.
• Time Zone Converter — Convert date and time between 30 world time zones.

🏢 Business & Legal Tools — 10 free tools

Professional document generators and financial calculators for freelancers, small businesses, and professionals — all in your browser, no signup required.

• Invoice Generator — Create professional invoices with line items, tax, discount, and download as PDF. Supports 10 currencies.
• NDA Generator — Generate a complete Non-Disclosure Agreement with custom parties, jurisdiction, and duration. Download as PDF.
• Service Contract Generator — Create a freelance or service agreement with scope, payment terms, deadlines, and IP clauses. Download as PDF.
• Demand Letter Generator — Generate a formal demand letter for unpaid invoices, breach of contract, refunds, or copyright infringement.
• Net Salary Calculator — Estimate take-home pay using your own income tax rate and deduction percentages — works anywhere in the world.
• VAT / GST Calculator — Add or remove VAT/GST at any rate (5% to 25% presets or custom) — no country lock-in.
• Currency Converter — Convert between 30 currencies using live exchange rates fetched in real time.
• Profit & Loss Builder — Build a complete P&L statement with custom income and expense lines. Download as formatted PDF.
• Break-Even Calculator — Calculate units and revenue needed to break even, plus profit or loss at any target sales volume.
• Business Name Generator — Generate creative business name ideas across five style profiles — modern, professional, creative, friendly, or premium.

Contact Us

We love hearing from our users. If you have a question, suggestion, bug report, or just want to say hello — reach out to us at toolzillaxyz@gmail.com. We typically respond within 1–3 business days.