Everything you need. Nothing to install.
Fast, private and free tools for images, PDFs, developers and more — all in your browser.
Popular Tools
Most used tools across Irreva — quickly get to what you need.
Explore Categories
Free tools organized into 8 categories
AI Tools
View all 16 →Advanced Word Counter
Count words, characters, sentences, paragraphs, unique words, reading time, speaking time and top keywords. Live stats as you type.
AI Color Palette Generator
Type a mood or theme and get a 5-color palette with HEX codes. Powered by color theory algorithms.
AI Content Detector
Detect if text was written by AI (ChatGPT, Claude, etc.) using linguistic pattern analysis. Free, no sign-up.
AI Email Writer
Generate professional emails for any scenario. Set email type, recipient, topic, and context. Copy instantly. Free.
AI FAQ Generator
Generate 10 FAQ question-and-answer pairs for any topic. Export as JSON for schema markup or plain text. Free.
AI Grammar Checker
Check and fix grammar, spelling, and style errors instantly with AI. Highlights mistakes with suggestions.
AI Hashtag Generator
Generate categorized hashtags for any topic using AI-powered keyword analysis. Broad, medium, and niche categories.
AI Headline Generator
Generate 8 headline variations for any topic. Blog, news, ad, and social media formats. Copy individually or all. Free.
AI Image Caption Generator
Upload any image and AI automatically generates a descriptive caption. Free, browser-based, no server upload.
AI Keyword Extractor
Extract top keywords from any text with frequency counts, density percentages, and word cloud visualization. Export as CSV.
AI Language Translator
Translate text between 20 languages instantly. English, Spanish, French, German, Japanese, Chinese, Arabic and more. Free, no sign-up.
AI Meta Description Generator
Generate 3 SEO-optimized meta descriptions (150—160 chars) for any page. Character counter included. Free.
Calculators
View all 27 →Age Calculator
Calculate exact age in years, months and days from any date of birth.
BMI Calculator
Calculate Body Mass Index. Supports metric (kg/cm) and imperial (lbs/ft).
Body Fat Calculator
Estimate body fat percentage using BMI method with age and gender inputs.
Calorie Calculator
Estimate daily calorie needs (TDEE) using age, gender, height, weight, and activity.
Compound Interest Calculator
Calculate future value with compounding and recurring monthly contributions.
Countdown Timer
Set a countdown timer for any duration. Alerts when time is up.
Currency Converter
Convert between 170+ currencies with live exchange rates.
Date Calculator
Calculate days between two dates. Add or subtract days from a date.
Discount Calculator
Calculate sale price, discount amount and savings percentage instantly.
EMI Calculator
Calculate monthly EMI for home, car, or personal loans. See total interest and total payment.
Fraction Calculator
Add, subtract, multiply, and divide fractions. Auto-simplifies results with mixed number form.
GPA Calculator
Calculate GPA from grades and credit hours. Supports 4.0 and percentage scales.
Developer Tools
View all 47 →Barcode Generator
Generate barcode images locally from text for product codes, IDs, and labels.
Barcode Scanner
Scan barcodes and QR codes with your camera or from uploaded images.
Base64 Encoder/Decoder
Encode text or files to Base64 and decode Base64 strings instantly.
Binary Converter
Convert between Binary, Decimal, Hexadecimal and Octal instantly.
Color Converter
Convert colors between HEX, RGB, and HSL formats instantly.
Color Palette Generator
Generate color palettes from any base color using harmony rules: complementary, analogous, triadic.
Color Picker
Pick colors, generate palettes and CSS gradients. HEX, RGB, HSL output.
Cron Expression Generator
Build cron expressions visually. Human-readable output with next 5 scheduled run times.
Cron Expression Parser
Decode any cron expression into plain English. Field breakdown and next 8 scheduled runs.
CSS Box Shadow Generator
Generate CSS box shadows with visual sliders. Multiple shadows, presets, inset toggle, live preview. Copy CSS instantly.
CSS Flexbox Generator
Generate CSS flexbox layouts visually. Control direction, justify, align, wrap, and gap. Live preview. Copy CSS.
CSS Gradient Generator
Create linear, radial, and conic CSS gradients visually. Multiple color stops, live preview, copy CSS.
Image Tools
View all 79 →Aspect Ratio Calculator
Calculate and convert aspect ratios for video, images and screens.
AVIF to JPG
Convert AVIF images to universally compatible JPG format.
Background Color Changer
Replace a solid background color with a new color. Adjustable tolerance.
Background Remover
Remove image backgrounds automatically. Download as transparent PNG.
Base64 to Image
Decode Base64 or Data URI strings back to downloadable image files.
Batch Image Converter
Convert multiple images to JPG, PNG, or WebP at once. Download as ZIP.
Blur Background
Blur image backgrounds while keeping the center sharp. Portrait depth effect.
Blur Image
Add adjustable Gaussian blur to photos. Control blur radius from 1—50px.
BMP to JPG
Convert BMP bitmap images to compact JPG files.
Brightness & Contrast
Adjust image brightness and contrast with live before/after preview.
Bulk Image Compressor
Compress multiple JPG, PNG, and WebP images at once. Download as ZIP.
Color Blindness Simulator
Preview how images appear to people with Protanopia, Deuteranopia, Tritanopia, or Achromatopsia. Side-by-side comparison.
PDF Tools
View all 27 →Add Page Numbers to PDF
Add page numbers to PDF files. Choose position, font size, prefix, and suffix.
Add Signature to PDF
Draw or type your signature and embed it into any PDF. Choose page and exact position.
Add Watermark to PDF
Add custom text watermarks to PDF files. Customize position, opacity, font size, and color.
Compare PDF Files
Find text differences between two PDF documents. Added and removed content highlighted page by page.
Compress PDF
Reduce PDF file size by compressing embedded images and streams.
Delete PDF Pages
Remove specific pages from a PDF. Enter page numbers or ranges to delete.
Excel to PDF
Convert CSV spreadsheet files to a formatted PDF table. A4 landscape with styled header row.
Extract PDF Pages
Extract specific pages or page ranges from a PDF into a new document.
JPG to PDF
Combine one or more JPG images into a single PDF document.
Merge PDF
Merge multiple PDF files into one. Drag to reorder pages.
PDF Metadata Viewer
View all metadata from any PDF: title, author, creation date, page count, PDF version, and more.
PDF OCR
Extract text from scanned PDF files using OCR. Download as .txt. Runs in your browser.
SEO Tools
View all 40 →Breadcrumb Schema Generator
Generate BreadcrumbList JSON-LD structured data for Google rich results. Add breadcrumb items, copy the script tag. Free.
Broken Link Checker
Scan any webpage for broken links. Checks up to 30 links and shows HTTP status for each. Find 404 errors instantly. Free.
Canonical Tag Checker
Check the canonical tag of any webpage. See the canonical URL, detect self-referencing canonicals, and find missing or incorrect tags.
Content Length Checker
Check word count, character count, paragraph count and reading time for any text or URL. Compare against SEO content length benchmarks.
Crawlability Checker
Check if search engine bots can crawl a URL. Verifies robots.txt rules, noindex tags, canonical tags, and HTTP status codes.
Domain Signal Checker
Analyze domain trust signals — SSL, age, nameservers — as a proxy for backlink profile quality. Free, instant. Note: does not query a real backlink index.
Domain Trust Estimator
Estimate the trust and authority signals of any domain based on age, TLD, and SSL. Free, instant. Note: this is an estimate, not a Moz or Ahrefs DA score.
External Link Analyzer
Extract all external links from any webpage. See domains, anchor text, rel attributes (nofollow/dofollow), and link counts.
FAQ Schema Generator
Generate FAQ schema markup (JSON-LD) for Google rich results. Add questions and answers, copy the script tag. Free, instant.
Google Preview Tool
Preview how your page appears in Google Search results. See title, URL, and description with pixel-accurate length warnings. Free.
GZIP Checker
Check if a website has GZIP or Brotli compression enabled. Verify Content-Encoding headers for any URL. Free, instant.
Heading Tag Checker
Analyze heading structure (H1—H6) of any webpage. Check for missing H1, multiple H1s, empty headings, and heading hierarchy.
Text Tools
View all 55 →Anagram Generator
Check if two words are anagrams and generate letter scrambles from any word. Free, browser-based anagram tool.
Capitalize Text
Capitalize text in Title Case instantly. Also converts to UPPER, lower, sentence, camelCase, and more.
Case Converter
Convert text between UPPER, lower, Title, camelCase, snake_case and more.
Character Counter
Count total characters, letters, digits, special chars, and spaces. Includes character frequency breakdown. Live stats as you type.
Citation Generator
Generate APA, MLA, and Chicago citations for books, websites, and articles. Copy formatted references instantly.
Duplicate Line Remover
Remove duplicate lines from text. Sort and clean lists instantly.
Email Extractor
Extract all email addresses from any text or HTML. Deduplicated results. Copy or download as .txt.
Emoji Counter
Count total and unique emojis in any text. See frequency table for each emoji. Live as-you-type stats.
Emoji Remover
Remove all emoji characters from text instantly. Side-by-side before/after view. Copy result.
Fancy Text Generator
Generate fancy Unicode text in bold, italic, script, fraktur, circled, strikethrough, tiny caps, upside-down, and ZALGO styles.
Flip Text
Flip, mirror and reverse text. Upside down text for social media.
Grammar Checker
Check for common grammar errors: double spaces, missing caps, confusables (their/there, your/you're), passive voice, and long sentences.
Web Tools
View all 43 →Blacklist Checker
Check if an IP address or domain is listed on email blacklists. Checks Spamhaus, SpamCop, Barracuda, and more. Free.
Bulk Redirect Checker
Check redirect chains for multiple URLs at once. See final destination URLs and HTTP status codes. Free, instant.
CORS Tester
Test cross-origin resource sharing headers for any API. Debug Access-Control-Allow-Origin errors instantly.
Disposable Email Checker
Check if an email address uses a disposable or temporary email service. Instant check against 50+ known providers.
DMARC Checker
Check the DMARC record for any domain. Validate policy, coverage, and reporting configuration. Free, instant.
DMARC Generator
Generate DMARC DNS TXT records. Set policy, reporting addresses, and alignment. Copy for your DNS settings.
DNS Lookup
Check A, AAAA, CNAME, MX, NS, TXT, SOA records for any domain. Uses Google Public DNS.
DNS Propagation Checker
Check DNS propagation status for any domain across multiple DNS resolvers. Verify A, CNAME, MX, NS, and TXT records. Free.
Domain Age Checker
Find out how old any domain is. See the exact registration date, age in years/months/days, registrar, and expiry date.
Domain Expiry Checker
Check when any domain expires and how many days remain. Get warnings for domains expiring soon. Free, instant.
Domain Info Checker
Check WHOIS, DNS records, SSL status and HTTP info for any domain. Instant results.
Email Header Analyzer
Paste raw email headers to extract routing info, SPF/DKIM/DMARC results, received chain, and all header fields.
Why choose Irreva?
Tools that respect your privacy and your time
100% Private
Your files never leave your device. All processing happens locally in your browser using the Canvas API and WebAssembly.
Instant Results
No server round-trips. Process files in seconds directly on your hardware, regardless of your internet connection speed.
Works Everywhere
Fully responsive and optimized for mobile, tablet, and desktop. Same experience on every device, every browser.
Built on trusted open-source technology
All tools process files 100% locally in your browser, zero uploads, zero server storage. Learn how it works →
Latest Guides
All articles →Resize Image for Twitter/X Header — Free, Exact Size
Twitter/X header images must be 1500×500 pixels. Learn how to crop, resize, and optimize your banner free in your browser — no upload required.
7 min readImageHow to Optimize Images for Google PageSpeed — Free Guide
Images are the #1 PageSpeed bottleneck. Learn how to compress, resize, and convert images to improve LCP, CLS, and your Google PageSpeed score.
8 min readImageResize Image for LinkedIn Profile — Free, Exact Dimensions
LinkedIn profile photos must be the right size and shape. Learn the exact dimensions, how to crop and resize, and compress — all free in your browser.
7 min read