Blazing-fast results
Every tool runs locally with WebAssembly and modern JavaScript. No round-trips, no waiting, no uploads.
890+ free tools — and growing
890+ Free Online Tools — PDF, Image, SEO, Developer & AI
Markvibe is the largest free online toolbox. Convert PDFs, compress images, format JSON, generate passwords, build QR codes, write with AI — all in your browser. No sign-up. No upload. 100% private.
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Discover the toolbox
Featured utilities, top categories, and what's trending right now.
Most popular
Word Counter
Count words, characters, sentences, and reading time in real time.
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Free tools live
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Files uploaded — runs in your browser
Case Converter
Convert text to UPPER, lower, Title, Sentence, camelCase, snake_case.
Lorem Ipsum Generator
Generate placeholder Lorem Ipsum text.
Trending now
All- 01Word CounterCount words, characters, sentences, and reading time in real time.
- 02Character CounterCount characters with and without spaces.
- 03Case ConverterConvert text to UPPER, lower, Title, Sentence, camelCase, snake_case.
- 04Remove Duplicate LinesDeduplicate lines while preserving order.
- 05Text SorterSort lines alphabetically, numerically, or by length.
- 06Lorem Ipsum GeneratorGenerate placeholder Lorem Ipsum text.
All tool categories
From PDF and image utilities to developer, SEO, and AI tools — pick a category and dive in.
- PDF Tools24 toolsMerge, split, compress, convert PDFs.
- Image Tools38 toolsCompress, resize, crop, convert images.
- SEO Tools50 toolsMeta tags, schema, sitemaps, audits.
- Text Tools127 toolsCount, sort, clean, transform text.
- Developer Tools103 toolsFormatters, validators, encoders.
- JSON Tools12 toolsFormat, validate, minify JSON.
- CSS Tools34 toolsMinify, format, generate gradients.
- HTML Tools8 toolsEncode, decode, format HTML.
- JavaScript Tools0 toolsMinify and analyze JS.
- Regex Tools2 toolsTest and explain patterns.
- Markdown Tools1 toolsPreview, convert Markdown.
- CSV Tools0 toolsParse, convert CSV files.
- Excel Tools0 toolsXLSX utilities.
- Base64 Tools10 toolsEncode and decode Base64.
- QR Code Tools4 toolsGenerate and read QR codes.
- Color Tools53 toolsPickers, converters, palettes.
- Unit Converter36 toolsLength, weight, temperature.
- Math Tools0 toolsCalculators and converters.
- Date & Time50 toolsTimestamps and date math.
- Password Tools7 toolsGenerate strong passwords.
- Hash Generator7 toolsMD5, SHA-1, SHA-256.
- UUID Generator2 toolsRFC 4122 UUIDs.
- IP Tools14 toolsLookup, validate IPs.
- Domain Tools0 toolsWHOIS, DNS, analysis.
- Email Tools3 toolsValidate, extract emails.
- URL Tools11 toolsEncode, decode, shorten.
- Security Tools13 toolsJWT, hashes, crypto.
- AI Tools4 toolsAI-assisted utilities.
- Random Generators72 toolsNumbers, names, strings.
- Finance Tools35 toolsLoans, EMI, currency.
- Calculator Tools129 toolsPercentage, BMI, age.
- Productivity Tools11 toolsBoost your workflow.
- Social Media28 toolsCaptions, post helpers.
- Marketing Tools0 toolsCopy, OG, schema.
- Webmaster Tools2 toolsRobots, sitemap, headers.
Trending tools this week
What other developers and creators are using right now.
Word Counter
Count words, characters, sentences, and reading time in real time.
Open tool
Character Counter
Count characters with and without spaces.
Open tool
Case Converter
Convert text to UPPER, lower, Title, Sentence, camelCase, snake_case.
Open tool
Remove Duplicate Lines
Deduplicate lines while preserving order.
Open tool
Text Sorter
Sort lines alphabetically, numerically, or by length.
Open tool
Lorem Ipsum Generator
Generate placeholder Lorem Ipsum text.
Open tool
Slug Generator
Create clean URL slugs from any text.
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Base64 Encode
Encode text or files to Base64.
Open tool
Recently added tools
Fresh utilities we shipped this month.
Youtube Tag Extractor
Tag extraction — needs API.
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Youtube Tag Generator
Generate YouTube tags from a topic.
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Youtube Timestamp Generator
Generate YouTube timestamp links.
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Youtube Title Extractor
Title fetch — needs API/scrape.
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Youtube Title Generator
Generate YouTube title ideas.
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Youtube Title Length
Check YouTube title length.
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Youtube Video Statistics
Open Social Blade for a video ID.
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Youtube Views Ratio
Compute view-to-subscriber ratio.
Open tool
Why Markvibe is the fastest free online toolbox
Built by engineers tired of slow, ad-stuffed tool sites — every utility is browser-native, private, and instant.
Private by design
Your files and text never leave your device. Zero servers touch your data on 99% of tools.
Forever free, no limits
No paywalls, no daily caps, no account required. Bookmark Markvibe and use it forever.
An honest, all-in-one toolbox — built by people who use it every day
We started Markvibe because we were tired of the same loop everyone else lives in: search for "PDF compressor," land on a popup-stuffed site, watch a progress bar lie to you, then upload your file to a server you don't trust. So we built 890+ tools the way we'd want to use them — opens in a second, runs in your browser, and never asks for your email.
PDF, image and file work
Merge a few PDFs before sending a contract. Knock 4 MB off a phone photo before posting it. Pull a single page out of a scanned report. The PDF and image tools here cover the boring jobs you do every week — compressing, resizing, cropping, converting between JPG / PNG / WebP / AVIF, and turning images into a clean PDF.
Developer and code helpers
Format and validate JSON, minify CSS / JS / HTML, decode a JWT to see what's actually in it, test a regex against real input, generate UUIDs, hash strings with SHA-256 or MD5, work with Base64, and flip numbers between binary, hex, decimal and octal — without leaving the tab.
SEO, webmaster and marketing
Write meta tags and Open Graph tags that actually preview correctly. Generate JSON-LD schema, canonical tags, sitemaps and robots.txt. Preview your Google snippet, check keyword density, and put together Twitter Cards or Instagram captions you'd be willing to ship.
Calculators, converters and AI helpers
BMI, EMI, percentages, ages, currencies, temperatures, lengths, weights, speed and timestamps — plus AI helpers for summaries, paraphrasing and titles when you're stuck on the first draft.
Why people trust Markvibe
We don't sell your data, and we don't dress up an AI dump as a "tool." Here's how we keep it that way.
Built and maintained by working web folks
Every tool is hand-built, tested in real browsers, and updated when the underlying spec or library changes. If something breaks, you can tell us through the contact link in the footer and we'll fix it — usually the same week.
Your data stays on your device
Nearly every tool runs in JavaScript or WebAssembly in your browser. We don't log inputs, we don't store files, and we don't need an account. The few tools that do need an external API (WHOIS, DNS, AI) say so on the page.
Free really means free
No paywalls, no "premium" plan, no daily quota. The site is funded by a couple of small ad slots in the margins — never inside the tool itself.
Honest about limits
If a tool is a quick browser helper rather than a full server-side processor, we say so on the page. Better to set expectations than to ship a half-working stub and call it a day.
Frequently asked questions
Quick answers about how Markvibe works.
Popular tools by category
Jump straight to the most-used utilities in every category — or browse the full 890-tool catalog.