Every online tool you need, beautifully in one place
PDF, image, text, developer, SEO, media and calculator tools that run entirely in your browser. Fast, private, and free.
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All Tools
PDF Tools
11PDF Merger
Combine multiple PDF files into one, in any order.
PDF Splitter
Split a PDF into single pages or custom page ranges.
PDF Page Rotator & Organizer
Reorder, rotate and delete pages, then export a fresh PDF.
PDF Compressor
Shrink PDF file size by recompressing embedded images.
PDF Password Protector & Remover
Add or remove password protection and permissions on a PDF.
JPG to PDF Converter
Turn JPG and PNG photos into a single tidy PDF document.
Image to PDF Converter
Combine images of any format into a paginated PDF.
PDF to JPG Converter
Render each PDF page to a high-resolution JPG or PNG.
PDF to Word Converter
Extract text and layout from a PDF into an editable .docx file.
Word to PDF Converter
Convert .docx documents to clean, shareable PDF files.
PDF to Excel Converter
Detect tables in a PDF and export them to XLSX / CSV.
Image Tools
11Image Compressor
Reduce JPG, PNG and WebP file size with a live quality preview.
Image Resizer
Resize images by pixels or percentage, keeping aspect ratio.
Image Cropper
Crop images freely or to fixed aspect ratios with a draggable frame.
Image Format Converter
Convert between PNG, JPG, WebP and BMP in one click.
Background Remover
Remove image backgrounds automatically, refine with a brush.
Image Upscaler
Enlarge images 2×–4× with smart sharpening and denoise.
Watermark Adder
Add text or logo watermarks with tiling, opacity and rotation.
Collage Maker
Arrange photos into grid, mosaic and strip collages.
Meme Generator
Classic top/bottom captions or custom text boxes on any image.
Favicon Generator
Generate every favicon size plus the HTML from an image or emoji.
Social Media Image Resizer
Fit or fill your image to every platform's exact dimensions.
Text & Writing
12Word Counter
Live word, sentence, paragraph and reading-time counts.
Character Counter
Count characters with and without spaces, plus byte size.
Case Converter
UPPER, lower, Title, Sentence, camelCase, snake_case and more.
Text Diff Checker
Compare two texts and highlight every added and removed line.
Duplicate Line Remover
Remove duplicate lines, sort, trim and shuffle line by line.
Lorem Ipsum Generator
Generate placeholder paragraphs, sentences or words.
Text Summarizer
Condense long text to key sentences with an extractive engine.
Paraphrasing Tool
Reword sentences using a large synonym and phrase model.
Grammar Checker
Catch spelling, spacing, punctuation and common grammar slips.
Similarity / Plagiarism Checker
Measure overlap between your text and one or more sources.
Text to Speech
Read text aloud with natural system voices and export audio.
Speech to Text
Dictate and transcribe speech in real time in your browser.
Calculators
12Age Calculator
Exact age in years, months, days plus next-birthday countdown.
BMI Calculator
Body Mass Index with healthy-range guidance, metric or imperial.
Percentage Calculator
Percent of, increase/decrease, and what-percent calculations.
Loan / EMI Calculator
Monthly EMI, total interest and a full amortization schedule.
Mortgage Calculator
Estimate payments with down payment, taxes, insurance and PMI.
Compound Interest Calculator
Project growth with regular contributions and any compounding.
Tax Calculator
Add or remove sales tax / VAT and see the breakdown.
Discount Calculator
Final price after one or stacked discounts, plus you-save amount.
Tip Calculator
Tip and per-person totals with bill splitting and rounding.
GPA Calculator
Weighted GPA from courses, credit hours and letter grades.
Date Difference Calculator
Days, weeks, months between dates, or add/subtract a duration.
Fuel Cost Calculator
Trip fuel cost and consumption from distance, price and economy.
Converters
9Unit Converter
Length, mass, area, volume, speed, temperature, data and more.
Currency Converter
Convert between 150+ currencies with editable offline rates.
Time Zone Converter
Compare a moment across cities and build a meeting planner.
CSV to JSON Converter
Parse delimited data to JSON with header and type detection.
JSON to CSV Converter
Flatten JSON arrays/objects into a downloadable CSV.
XML to JSON Converter
Convert XML documents to structured JSON and back.
Markdown to HTML Converter
Render Markdown to clean HTML with a live split preview.
HTML to Markdown Converter
Turn HTML into tidy Markdown for docs and READMEs.
General File Format Converter
A hub that routes your file to the right converter automatically.
Developer Tools
9JSON Formatter & Validator
Pretty-print, minify, validate and inspect JSON with a tree view.
Base64 Encoder / Decoder
Encode or decode text and files to and from Base64.
URL Encoder / Decoder
Percent-encode or decode URLs and query components.
HTML Entity Encoder / Decoder
Escape and unescape HTML entities safely.
HTML / CSS / JS Minifier
Strip whitespace and comments to shrink front-end assets.
Code Beautifier
Reformat messy HTML, CSS, JS and JSON with configurable style.
Regex Tester
Test patterns with live match highlighting and group inspection.
UUID Generator
Bulk-generate v4 and v7 UUIDs, ULIDs and nano IDs.
Cron Expression Builder
Build and explain cron schedules with the next run times.
SEO & Web
10Meta Tag Generator
Generate title, description, Open Graph and Twitter card tags.
SERP Snippet Preview
Preview how your page looks in Google on desktop and mobile.
Keyword Density Checker
Analyze term frequency, n-grams and stop-word ratio.
Keyword Research Tool
Expand a seed keyword into questions, modifiers and long-tails.
Robots.txt Generator
Build a valid robots.txt with per-agent allow/disallow rules.
Sitemap Generator
Crawl a site or paste URLs to build an XML sitemap.
Website Speed Test
Measure load time, page weight and request count for any URL.
Broken Link Checker
Scan a page for links and report the ones that 404 or fail.
Backlink Checker
Discover referring pages and anchor text from open indexes.
Domain Authority Checker
Estimate site strength from age, links, headers and signals.
Security & Codes
5Password Generator
Create strong random passwords and passphrases with rules.
Password Strength Checker
Estimate crack time and spot weak patterns — offline.
QR Code Generator
URL, Wi-Fi, vCard and more with colors, logo and export.
QR Code Scanner
Scan QR codes from your camera or an uploaded image.
Barcode Generator
CODE128, EAN, UPC, ITF and more as SVG or PNG.
Audio & Video
8Video Compressor
Re-encode video to a target size or quality in the browser.
Video Trimmer & Cutter
Cut a clip to a start/end range without re-uploading.
Video to MP3 Converter
Extract the audio track from a video as MP3 or WAV.
Video to GIF Converter
Convert a video segment to an optimized animated GIF.
GIF Maker
Build an animated GIF from a sequence of images.
Audio Trimmer
Trim and fade audio with a waveform you can scrub.
Audio Format Converter
Convert between MP3, WAV, OGG, M4A and FLAC.
YouTube Thumbnail Downloader
Grab every thumbnail resolution from a YouTube link.
Social Media
5Instagram Caption & Hashtag Generator
Generate on-theme captions and grouped hashtag sets.
YouTube Tags Extractor
Pull tags and keywords from any public YouTube video.
Twitter / X Character Counter
Live count with X's URL and CJK weighting and thread splitting.
Username Availability Checker
Check a handle across major platforms at once.
Social Post Preview
Preview a link's card on X, Facebook, LinkedIn and Discord.
Business & Productivity
6Invoice Generator
Build a branded invoice with line items, tax and export to PDF.
Resume / CV Builder
Fill a form, pick a template and export a polished PDF resume.
To-Do List
A fast keyboard-driven task list saved in your browser.
Online Notepad & Sticky Notes
Auto-saving notes and a draggable sticky-note board.
Random Name & Number Picker
Draw random names, numbers, teams or a wheel spin.
Signature Generator
Draw or type a signature and export a transparent PNG.
Frequently asked questions
Is Toolcenter free?+
Yes. Every tool is completely free with no sign-up, no watermark and no daily limit.
Are my files uploaded to a server?+
No. Almost every tool processes your files and text on your own device in the browser. The few tools that must reach the network say so clearly on the page.
Do I need to create an account?+
No. There are no accounts, emails or installs. Open a tool and use it.
Does it work on mobile?+
Yes. Every page is responsive and works in modern mobile browsers.
In which languages is Toolcenter available?+
The interface and help content are available in multiple languages, and your language is detected automatically. You can change it any time from the language switcher in the header.