Free Tools
140+ Free Online Tools — No Signup, Works in Browser
CodexStudio built these tools for developers, designers, and businesses. All tools run 100% in your browser — nothing is ever uploaded to our servers.
Showing 139 tools
Image Compressor
Compress images up to 80% without quality loss
Use toolImage Resizer
Resize images to any dimension instantly
Use toolImage Format Converter
Convert between JPG, PNG, WebP, and AVIF
Use toolBackground Remover
Remove image background instantly with AI
Use toolFavicon Generator
Generate favicon from image or text in seconds
Use toolPDF Compressor
Reduce PDF file size without losing quality
Use toolMerge PDF
Combine multiple PDF files into one
Use toolPDF to JPG
Convert each PDF page to a JPG image
Use toolSplit PDF
Split PDF into separate pages or ranges
Use toolWord to PDF
Convert Word documents to PDF instantly
Use toolWord Counter
Count words, characters, and reading time
Use toolCharacter Counter
Count characters for Twitter, SMS and meta tags
Use toolCase Converter
Convert text between UPPER, lower, Title Case
Use toolLorem Ipsum Generator
Generate placeholder text in seconds
Use toolText to Slug Converter
Convert any title to a clean URL slug
Use toolRemove Duplicate Lines
Remove duplicate or empty lines from text
Use toolPassword Generator
Generate strong random passwords instantly
Use toolPassword Strength Checker
Check how strong your password is
Use toolHash Generator
Generate MD5, SHA-256, SHA-512 hashes
Use toolBase64 Encoder / Decoder
Encode or decode Base64 strings instantly
Use toolJSON Formatter
Format and validate JSON with a colored tree
Use toolCSS Minifier
Minify CSS to reduce website file size
Use toolJavaScript Minifier
Minify JavaScript to speed up your website
Use toolHTML Formatter
Beautify or minify HTML code instantly
Use toolColor Picker & Converter
Pick colors and convert HEX, RGB, HSL
Use toolRegex Tester
Test regular expressions with live match highlights
Use toolURL Encoder / Decoder
Encode or decode URL strings instantly
Use toolMeta Tag Generator
Generate SEO meta tags, OG tags, Twitter cards
Use toolMarkdown Preview
Write and preview Markdown live side by side
Use toolAge Calculator
Calculate exact age from date of birth
Use toolBMI Calculator
Calculate your Body Mass Index instantly
Use toolPercentage Calculator
Calculate percentages in 3 different ways
Use toolTip Calculator
Calculate tip and split bill between people
Use toolCurrency Converter
Convert currencies with live exchange rates
Use toolUnit Converter
Convert length, weight, temperature and more
Use toolQR Code Generator
Generate QR codes for URLs, WiFi, vCards
Use toolKeyword Density Checker
Check keyword frequency in your content
Use toolMeta Description Generator
Generate optimized meta descriptions with AI
Use toolPrivacy Policy Generator
Generate a free privacy policy for your website
Use toolXML Sitemap Generator
Generate an XML sitemap for your website
Use toolTikTok Video Downloader
Download TikTok videos without watermark
Use toolYouTube Video Downloader
Download YouTube videos in MP4 or MP3
Use toolInstagram Downloader
Download Instagram Reels, photos, and stories
Use toolFacebook Video Downloader
Download Facebook videos and Reels in HD
Use toolTwitter/X Video Downloader
Download videos and GIFs from X (Twitter)
Use toolYouTube to MP3 Converter
Extract MP3 audio from any YouTube video
Use toolPinterest Video Downloader
Download Pinterest videos and images
Use toolVimeo Downloader
Download Vimeo videos in original quality
Use toolYouTube Thumbnail Downloader
Download YouTube video thumbnails in HD
Use toolVideo to GIF Converter
Convert video clips to animated GIF
Use toolAudio Trimmer
Trim MP3 audio files online for free
Use toolSpotify to MP3
Download Spotify tracks as MP3 files
Use toolHashtag Generator
Generate 30 trending hashtags for any topic
Use toolInstagram Bio Generator
Generate the perfect Instagram bio with AI
Use toolInstagram Font Generator
Copy-paste fancy fonts for Instagram and TikTok
Use toolYouTube Banner Maker
Create a YouTube channel art banner free
Use toolEngagement Rate Calculator
Calculate Instagram and TikTok engagement rate
Use toolEmail Subject Line Generator
Generate click-worthy email subject lines with AI
Use toolTikTok Bio Generator
Generate a catchy TikTok bio instantly
Use toolSocial Media Content Calendar
Plan 30 days of social media content
Use toolLink in Bio Page Generator
Create a free link-in-bio landing page
Use toolInvoice Generator
Create professional invoices and download as PDF
Use toolLoan EMI Calculator
Calculate monthly loan payments and total interest
Use toolMortgage Calculator
Calculate mortgage payments and total interest
Use toolCompound Interest Calculator
See how investments grow with compound interest
Use toolVAT Calculator
Add or remove VAT from any price instantly
Use toolDiscount Calculator
Calculate sale price after any discount
Use toolProfit Margin Calculator
Calculate gross and net profit margins
Use toolSalary to Hourly Calculator
Convert annual salary to hourly, daily, weekly rate
Use toolROI Calculator
Calculate return on investment percentage
Use toolReceipt Generator
Create printable receipts for cash sales
Use toolPay Stub Generator
Generate pay stubs and payslips with deductions
Use toolHours & Pay Calculator
Calculate total pay from hours worked
Use toolAI Blog Post Generator
Generate a full blog post draft with AI
Use toolAI Email Writer
Write professional emails instantly with AI
Use toolAI Paraphrasing Tool
Rewrite any text in different tones with AI
Use toolAI Text Summarizer
Summarize any long text in seconds with AI
Use toolAI Grammar Checker
Fix grammar, spelling, and clarity with AI
Use toolAI Ad Copy Generator
Generate Facebook, Google, Instagram ad copy
Use toolAI Business Name Generator
Generate unique business name ideas with AI
Use toolAI Caption Generator
Generate Instagram and LinkedIn captions with AI
Use toolAI Cover Letter Writer
Generate a tailored cover letter with AI
Use toolAI Content Detector
Detect AI-generated text and plagiarism
Use toolResume / CV Builder
Build a professional resume and download as PDF free
Use toolText Repeater
Repeat any text N times with custom separator
Use toolText Reverser
Reverse text backwards or reverse word order
Use toolOnline Notepad
Free distraction-free notepad in your browser
Use toolDigital Signature Generator
Create a handwritten-style digital signature
Use toolRandom Word Generator
Generate random words for games and writing
Use toolTitle Case Converter
Convert text to APA, Chicago, or MLA title case
Use toolCover Letter Generator
Generate a professional cover letter as PDF
Use toolReading Time Calculator
Calculate estimated reading time for any text
Use toolTable of Contents Generator
Auto-generate a table of contents from headings
Use toolMeme Generator
Create memes from templates or your own images
Use toolImage Cropper
Crop images to exact dimensions or aspect ratio
Use toolImage Color Picker
Pick any color from an uploaded image
Use toolImage Rotator & Flipper
Rotate and flip images in any direction
Use toolWatermark Adder
Add text or logo watermark to images
Use toolAI Photo Enhancer
Upscale and enhance photo quality with AI
Use toolImage Filter Tool
Apply filters and effects to photos online
Use toolImage to Base64 Converter
Convert images to Base64 for HTML/CSS embedding
Use toolImage Metadata Viewer (EXIF)
View EXIF data from any photo
Use toolAspect Ratio Calculator
Calculate correct width or height for any ratio
Use toolCSS Gradient Generator
Create beautiful CSS gradients visually
Use toolCSS Box Shadow Generator
Build CSS box shadows with live preview
Use toolIP Address Lookup
Find location and ISP for any IP address
Use toolDNS Lookup Tool
Check DNS records for any domain
Use toolUnix Timestamp Converter
Convert Unix timestamps to readable dates
Use toolUUID Generator
Generate random UUIDs in bulk instantly
Use toolJSON to CSV Converter
Convert JSON arrays to CSV spreadsheets
Use toolHTTP Status Code Checker
Check the HTTP status of any URL
Use toolJWT Token Decoder
Decode and inspect JWT tokens instantly
Use toolOpen Port Checker
Check which ports are open on any server
Use toolCalorie Calculator (TDEE)
Calculate daily calorie needs for your goals
Use toolWater Intake Calculator
Calculate your ideal daily water intake
Use toolIdeal Weight Calculator
Find your ideal weight range for your height
Use toolSleep Calculator
Find the best bedtime based on sleep cycles
Use toolProtein Intake Calculator
Calculate daily protein needs for your goal
Use toolOvulation Calculator
Calculate ovulation date and fertile window
Use toolPregnancy Due Date Calculator
Calculate pregnancy due date from last period
Use toolRunning Pace Calculator
Calculate running pace, distance, or time
Use toolTime Zone Converter
Convert time between any cities worldwide
Use toolDate Difference Calculator
Calculate days between any two dates
Use toolRandom Number Generator
Generate random numbers in any range
Use toolRandom Name Picker
Pick a random winner from a list of names
Use toolPomodoro Timer
25-minute focus timer with break intervals
Use toolOnline Stopwatch & Timer
Stopwatch, countdown timer, and interval timer
Use toolURL Shortener
Shorten any long URL to a short link
Use toolChecklist Maker
Create printable checklists in seconds
Use toolMeeting Cost Calculator
Calculate the real cost of your meetings
Use toolDomain Age Checker
Check how old any domain name is
Use toolGPA Calculator
Calculate cumulative GPA from grades
Use toolGrade Calculator
Calculate weighted final grade percentage
Use toolCitation Generator
Generate APA, MLA, and Chicago citations
Use toolRoman Numeral Converter
Convert between numbers and Roman numerals
Use toolNumber Base Converter
Convert between binary, octal, decimal, hex
Use toolFlashcard Maker
Create digital flashcards for studying
Use toolWord Pronunciation Tool
Hear the pronunciation of any word
Use toolSudoku & Puzzle Generator
Generate and play Sudoku puzzles online
Use toolWhy Use CodexStudio's Free Online Tools?
Whether you need to compress an image, merge PDFs, count words, generate a strong password, or create a QR code, our free online tools get the job done without signup or uploads to our servers. Every tool runs entirely in your browser. That means your files and data stay on your device — we never see them. Developers love our JSON formatter, CSS and JavaScript minifiers, regex tester, and URL encoder. Designers use our image compressor, resizer, and format converter daily. Writers rely on our word counter and character counter for articles and social posts. Small businesses use our PDF tools, favicon generator, and meta tag generator to look professional without paying for expensive software.
Image Tools & PDF Tools — No Account Required
Our image compressor reduces PNG, JPG, and WebP file sizes by up to 80% so your website loads faster. The image resizer lets you set exact dimensions or scale by percentage while keeping aspect ratio. Need a different format? The image converter outputs JPG, PNG, WebP, and AVIF. For favicons we generate all standard sizes and give you the HTML snippet. PDF tools include merge, split, compress, and PDF to JPG — all powered by pdf-lib in the browser. Convert Word to PDF without sending your document anywhere. Every tool is free and works on desktop and mobile.
Text Tools, Security Tools & Developer Tools
Paste text into our word counter to see words, characters, sentences, paragraphs, and reading time. The character counter shows limits for Twitter, SMS, and meta descriptions with a live bar. Case converter handles UPPERCASE, lowercase, Title Case, camelCase, and snake_case. Generate Lorem Ipsum, convert titles to URL slugs, and remove duplicate lines in one click. For security we offer a strong password generator and password strength checker, plus hash generator (MD5, SHA-256, SHA-512) and Base64 encoder/decoder — all client-side. Developers get a JSON formatter, CSS minifier, JavaScript minifier, HTML formatter, color picker, regex tester, URL encoder, meta tag generator, and live Markdown preview.
Calculators, QR Codes & SEO Tools
Calculate your age, BMI, percentages, tips, and splits with our calculator suite. The currency converter uses live exchange rates for 150+ currencies including PKR and USD. The unit converter handles length, weight, temperature, volume, area, speed, and digital storage. Create QR codes for URLs, WiFi, vCards, and plain text — then download as PNG. SEO and marketing tools include keyword density checker, meta description generator, privacy policy generator, and XML sitemap generator. Bookmark the tools you use most and come back anytime — they will always be free and private.
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