# TurboTweaks > TurboTweaks is a collection of fast, free online tools — PDF, image, developer and text utilities. No signup, no uploads for most tools: everything runs in your browser. All tools are free, require no signup, and most run entirely client-side in the user's browser (files are not uploaded to a server). Each tool lives at a stable URL and can be linked to directly. ## PDF Tools - [Merge PDF Files](https://turbotweaks.app/tools/merge-pdf): Combine multiple PDF files into one document online for free. Merging happens in your browser — files are never uploaded. - [Split PDF](https://turbotweaks.app/tools/split-pdf): Extract pages from a PDF or split it into separate files, free and in your browser. Choose a page range and download instantly. - [Rotate PDF](https://turbotweaks.app/tools/rotate-pdf): Rotate PDF pages 90, 180 or 270 degrees online for free. Processing happens locally in your browser — nothing is uploaded. - [JPG to PDF Converter](https://turbotweaks.app/tools/jpg-to-pdf): Convert JPG or PNG images to a PDF document online for free. Combine multiple images into one PDF, entirely in your browser. - [PDF to JPG Converter](https://turbotweaks.app/tools/pdf-to-jpg): Convert PDF pages to JPG images online for free. Rendering happens in your browser with no upload — download each page as an image. ## Image Tools - [PNG to JPG Converter](https://turbotweaks.app/tools/png-to-jpg): Convert PNG images to JPG online for free. Fast, private conversion that runs in your browser — no upload, no watermark, no signup. - [JPG to PNG Converter](https://turbotweaks.app/tools/jpg-to-png): Convert JPG images to PNG online for free. Fast, private conversion that runs in your browser — no upload, no watermark, no signup. - [WEBP to PNG Converter](https://turbotweaks.app/tools/webp-to-png): Convert WEBP images to PNG online for free. Fast, private conversion that runs in your browser — no upload, no watermark, no signup. - [PNG to WEBP Converter](https://turbotweaks.app/tools/png-to-webp): Convert PNG images to WEBP online for free. Fast, private conversion that runs in your browser — no upload, no watermark, no signup. - [WEBP to JPG Converter](https://turbotweaks.app/tools/webp-to-jpg): Convert WEBP images to JPG online for free. Fast, private conversion that runs in your browser — no upload, no watermark, no signup. - [JPG to WEBP Converter](https://turbotweaks.app/tools/jpg-to-webp): Convert JPG images to WEBP online for free. Fast, private conversion that runs in your browser — no upload, no watermark, no signup. - [Image Compressor](https://turbotweaks.app/tools/image-compressor): Compress JPG, PNG and WebP images online for free without visible quality loss. Runs in your browser — images are never uploaded. - [Image Resizer](https://turbotweaks.app/tools/image-resizer): Resize images to exact pixel dimensions online for free. Keep aspect ratio or set custom width and height — all in your browser. - [Image to Base64 Converter](https://turbotweaks.app/tools/image-to-base64): Convert any image to a Base64 data URI online for free. Perfect for embedding images in CSS, HTML or JSON. Browser-only, no upload. - [Image to Text (OCR)](https://turbotweaks.app/tools/image-to-text): Extract text from images online for free with OCR — photos, screenshots and scans in 15 languages. Recognition runs in your browser, no upload. ## Developer Tools - [JSON Formatter & Validator](https://turbotweaks.app/tools/json-formatter): Format, beautify, validate and minify JSON online for free. Instant syntax error messages with line numbers. Runs fully in your browser. - [JSON to CSV Converter](https://turbotweaks.app/tools/json-to-csv): Convert a JSON array of objects to CSV online for free. Handles nested keys, quotes and commas correctly. Browser-only, no upload. - [Base64 Encode / Decode](https://turbotweaks.app/tools/base64-encode-decode): Encode text to Base64 or decode Base64 to text online for free. Full Unicode support. Runs entirely in your browser. - [URL Encode / Decode](https://turbotweaks.app/tools/url-encode-decode): URL-encode or decode text online for free (percent encoding). Great for query strings and debugging URLs. Browser-only. - [HTML Encode / Decode](https://turbotweaks.app/tools/html-encode-decode): Escape or unescape HTML entities online for free. Convert < > & " to entities and back. Runs in your browser. - [JWT Decoder](https://turbotweaks.app/tools/jwt-decoder): Decode JSON Web Tokens online for free. Inspect header, payload and expiry instantly — the token never leaves your browser. - [Hash Generator (MD5, SHA-1, SHA-256, SHA-512)](https://turbotweaks.app/tools/hash-generator): Generate MD5, SHA-1, SHA-256 and SHA-512 hashes from text online for free. Computed locally in your browser using Web Crypto. - [Regex Tester](https://turbotweaks.app/tools/regex-tester): Test regular expressions online for free with live match highlighting, flags and capture groups. JavaScript regex engine, runs in your browser. - [Unix Timestamp Converter](https://turbotweaks.app/tools/timestamp-converter): Convert Unix timestamps (epoch seconds/milliseconds) to human-readable dates and back, online and free. Shows UTC and your local timezone. - [Cron Expression Parser](https://turbotweaks.app/tools/cron-parser): Parse and explain cron expressions in plain English online for free. Understand each field of your crontab schedule instantly. - [Text Diff Checker](https://turbotweaks.app/tools/diff-checker): Compare two texts online for free and see line-by-line differences highlighted. Great for code review and config comparison. Browser-only. - [Color Converter (HEX, RGB, HSL)](https://turbotweaks.app/tools/color-converter): Convert colors between HEX, RGB and HSL online for free, with a live preview and color picker. Runs in your browser. - [Markdown Previewer](https://turbotweaks.app/tools/markdown-preview): Write Markdown and preview the rendered HTML live, online and free. Supports GitHub-flavored basics: tables, code blocks, lists. Browser-only. - [SQL Formatter](https://turbotweaks.app/tools/sql-formatter): Format and beautify SQL queries online for free. Uppercase keywords, clause-per-line layout and indentation — or minify to one line. Browser-only. - [YAML Formatter & Validator](https://turbotweaks.app/tools/yaml-formatter): Format, validate and convert YAML online for free. Instant syntax errors with line numbers, plus YAML to JSON and JSON to YAML conversion. Browser-only. - [XML Formatter & Validator](https://turbotweaks.app/tools/xml-formatter): Format, beautify, validate and minify XML online for free. Clear syntax error messages and clean indentation, entirely in your browser. - [CSV to JSON Converter](https://turbotweaks.app/tools/csv-to-json): Convert CSV to JSON online for free. Handles quoted fields, custom delimiters and type conversion — runs entirely in your browser. - [Text to Binary Converter](https://turbotweaks.app/tools/text-to-binary): Convert text to binary or hexadecimal and back online for free. Full Unicode (UTF-8) support, instant results in your browser. ## Text Tools - [Word Counter](https://turbotweaks.app/tools/word-counter): Count words, characters, sentences and estimated reading time online for free. Live counts as you type, fully in your browser. - [Case Converter](https://turbotweaks.app/tools/case-converter): Convert text between UPPERCASE, lowercase, Title Case, Sentence case, camelCase, snake_case and kebab-case online for free. - [Remove Duplicate Lines](https://turbotweaks.app/tools/remove-duplicate-lines): Remove duplicate lines from text online for free, with options to trim whitespace and ignore case. Instant, browser-only. - [Text Sorter (Sort Lines)](https://turbotweaks.app/tools/text-sorter): Sort lines of text alphabetically, reverse or by length, online and free. Handles thousands of lines instantly in your browser. - [URL Slug Generator](https://turbotweaks.app/tools/slug-generator): Convert any title or sentence into a clean, SEO-friendly URL slug online for free. Handles accents, symbols and spaces. ## Generators - [Password Generator](https://turbotweaks.app/tools/password-generator): Generate strong, random passwords online for free. Choose length, symbols, numbers and case. Uses your browser's secure random generator — nothing is transmitted. - [UUID Generator (v4)](https://turbotweaks.app/tools/uuid-generator): Generate random UUID v4 identifiers online for free — one or in bulk. Cryptographically random, generated in your browser. - [Random String Generator](https://turbotweaks.app/tools/random-string-generator): Generate random strings with custom length and character sets online for free — great for API keys, tokens and test data. - [Random Number Generator](https://turbotweaks.app/tools/random-number-generator): Generate random numbers in any range online for free — single numbers or lists, with or without duplicates. Instant and browser-only. - [QR Code Generator](https://turbotweaks.app/tools/qr-code-generator): Create QR codes for URLs, text, WiFi and more, online and free. Download as PNG. Generated in your browser — no watermark, no signup. - [Lorem Ipsum Generator](https://turbotweaks.app/tools/lorem-ipsum-generator): Generate lorem ipsum placeholder text online for free — choose paragraphs, sentences or words and copy with one click. ## Network Tools - [What Is My IP Address](https://turbotweaks.app/tools/what-is-my-ip): See your public IP address instantly, free. Shows the IP your device presents to the internet. - [IP Subnet Calculator (CIDR)](https://turbotweaks.app/tools/ip-subnet-calculator): Calculate IPv4 subnets online for free: network and broadcast address, usable host range, subnet mask and wildcard from any CIDR notation. ## SEO & Marketing Tools - [UTM Link Builder](https://turbotweaks.app/tools/utm-builder): Build campaign URLs with UTM parameters online for free. Tag source, medium, campaign, term and content — get a tracking-ready link instantly. - [Meta Tag Generator](https://turbotweaks.app/tools/meta-tag-generator): Generate SEO meta tags, Open Graph and Twitter Card markup online for free. Fill in your page details and copy ready-to-paste HTML. - [Google SERP Preview](https://turbotweaks.app/tools/serp-preview): Preview how your page title and meta description look in Google search results, free. Live desktop and mobile previews with length warnings. ## Calculators & Converters - [Centimeters to Inches Converter](https://turbotweaks.app/tools/cm-to-inches): Convert centimeters to inches online for free. Instant, accurate conversion with a handy reference table — runs in your browser. - [Inches to Centimeters Converter](https://turbotweaks.app/tools/inches-to-cm): Convert inches to centimeters online for free. Instant, accurate conversion with a handy reference table — runs in your browser. - [Meters to Feet Converter](https://turbotweaks.app/tools/meters-to-feet): Convert meters to feet online for free. Instant, accurate conversion with a handy reference table — runs in your browser. - [Feet to Meters Converter](https://turbotweaks.app/tools/feet-to-meters): Convert feet to meters online for free. Instant, accurate conversion with a handy reference table — runs in your browser. - [Kilometers to Miles Converter](https://turbotweaks.app/tools/km-to-miles): Convert kilometers to miles online for free. Instant, accurate conversion with a handy reference table — runs in your browser. - [Miles to Kilometers Converter](https://turbotweaks.app/tools/miles-to-km): Convert miles to kilometers online for free. Instant, accurate conversion with a handy reference table — runs in your browser. - [Kilograms to Pounds Converter](https://turbotweaks.app/tools/kg-to-lbs): Convert kilograms to pounds online for free. Instant, accurate conversion with a handy reference table — runs in your browser. - [Pounds to Kilograms Converter](https://turbotweaks.app/tools/lbs-to-kg): Convert pounds to kilograms online for free. Instant, accurate conversion with a handy reference table — runs in your browser. - [Grams to Ounces Converter](https://turbotweaks.app/tools/grams-to-ounces): Convert grams to ounces online for free. Instant, accurate conversion with a handy reference table — runs in your browser. - [Ounces to Grams Converter](https://turbotweaks.app/tools/ounces-to-grams): Convert ounces to grams online for free. Instant, accurate conversion with a handy reference table — runs in your browser. - [Celsius to Fahrenheit Converter](https://turbotweaks.app/tools/celsius-to-fahrenheit): Convert celsius to fahrenheit online for free. Instant, accurate conversion with a handy reference table — runs in your browser. - [Fahrenheit to Celsius Converter](https://turbotweaks.app/tools/fahrenheit-to-celsius): Convert fahrenheit to celsius online for free. Instant, accurate conversion with a handy reference table — runs in your browser. - [Liters to Gallons (US) Converter](https://turbotweaks.app/tools/liters-to-gallons): Convert liters to gallons (us) online for free. Instant, accurate conversion with a handy reference table — runs in your browser. - [Gallons (US) to Liters Converter](https://turbotweaks.app/tools/gallons-to-liters): Convert gallons (us) to liters online for free. Instant, accurate conversion with a handy reference table — runs in your browser. - [KM/H to MPH Converter](https://turbotweaks.app/tools/kmh-to-mph): Convert km/h to mph online for free. Instant, accurate conversion with a handy reference table — runs in your browser. - [MPH to KM/H Converter](https://turbotweaks.app/tools/mph-to-kmh): Convert mph to km/h online for free. Instant, accurate conversion with a handy reference table — runs in your browser. - [Millimeters to Inches Converter](https://turbotweaks.app/tools/mm-to-inches): Convert millimeters to inches online for free. Instant, accurate conversion with a handy reference table — runs in your browser. - [Inches to Millimeters Converter](https://turbotweaks.app/tools/inches-to-mm): Convert inches to millimeters online for free. Instant, accurate conversion with a handy reference table — runs in your browser. - [Stone to Kilograms Converter](https://turbotweaks.app/tools/stone-to-kg): Convert stone to kilograms online for free. Instant, accurate conversion with a handy reference table — runs in your browser. - [Kilograms to Stone Converter](https://turbotweaks.app/tools/kg-to-stone): Convert kilograms to stone online for free. Instant, accurate conversion with a handy reference table — runs in your browser. - [Milliliters to Fluid Ounces (US) Converter](https://turbotweaks.app/tools/ml-to-oz): Convert milliliters to fluid ounces (us) online for free. Instant, accurate conversion with a handy reference table — runs in your browser. - [Fluid Ounces (US) to Milliliters Converter](https://turbotweaks.app/tools/oz-to-ml): Convert fluid ounces (us) to milliliters online for free. Instant, accurate conversion with a handy reference table — runs in your browser. - [Acres to Hectares Converter](https://turbotweaks.app/tools/acres-to-hectares): Convert acres to hectares online for free. Instant, accurate conversion with a handy reference table — runs in your browser. - [Hectares to Acres Converter](https://turbotweaks.app/tools/hectares-to-acres): Convert hectares to acres online for free. Instant, accurate conversion with a handy reference table — runs in your browser. - [Square Feet to Square Meters Converter](https://turbotweaks.app/tools/square-feet-to-square-meters): Convert square feet to square meters online for free. Instant, accurate conversion with a handy reference table — runs in your browser. - [Square Meters to Square Feet Converter](https://turbotweaks.app/tools/square-meters-to-square-feet): Convert square meters to square feet online for free. Instant, accurate conversion with a handy reference table — runs in your browser. - [Percentage Calculator](https://turbotweaks.app/tools/percentage-calculator): Calculate percentages online for free: what is X% of Y, X is what percent of Y, and percentage increase or decrease between two numbers. - [Age Calculator](https://turbotweaks.app/tools/age-calculator): Calculate exact age from a date of birth online for free — years, months and days, total days lived, and a countdown to the next birthday. - [BMI Calculator](https://turbotweaks.app/tools/bmi-calculator): Calculate your Body Mass Index (BMI) online for free — metric or imperial units, WHO category and the healthy weight range for your height. - [Loan Calculator](https://turbotweaks.app/tools/loan-calculator): Calculate monthly loan payments, total cost and total interest online for free. Works for mortgages, car loans and personal loans. - [Tip Calculator](https://turbotweaks.app/tools/tip-calculator): Calculate the tip and split the bill online for free. Pick a percentage, set the party size and see the per-person amount instantly. - [Date Difference Calculator](https://turbotweaks.app/tools/date-difference-calculator): Count the days between two dates online for free — exact difference in years, months and days, plus totals in days and weeks. ## Kenya Tools - [KRA PAYE Calculator (Net Pay Kenya)](https://turbotweaks.app/tools/kra-paye-calculator): Calculate your net (take-home) salary in Kenya for free with 2026 rates: PAYE tax bands, NSSF, SHIF (2.75%) and the Housing Levy — full payslip breakdown. - [NSSF Calculator Kenya (2026 Rates)](https://turbotweaks.app/tools/nssf-calculator): Calculate your NSSF pension contribution in Kenya for free using the February 2026 Year 4 rates — Tier I and Tier II breakdown plus the employer match. - [SHIF Calculator Kenya (SHA Contributions)](https://turbotweaks.app/tools/shif-calculator): Calculate your SHIF (Social Health Insurance Fund) contribution in Kenya for free — 2.75% of gross salary with the KSh 300 minimum, as deducted by SHA. - [M-Pesa Charges Calculator (2026 Tariffs)](https://turbotweaks.app/tools/mpesa-charges-calculator): Check M-Pesa charges for 2026 free: send money, agent withdrawal and ATM fees for any amount, with the full Safaricom tariff table. ## Guides - [How to Merge PDF Files Without Uploading Them Anywhere](https://turbotweaks.app/blog/merge-pdf-files-without-uploading): Most online PDF mergers upload your documents to their servers. Here's how to combine PDFs entirely in your browser — and why it matters. - [Kenya Payslip Deductions Explained (2026): PAYE, NSSF, SHIF & Housing Levy](https://turbotweaks.app/blog/kenya-payslip-deductions-explained-2026): A walkthrough of every statutory deduction on a 2026 Kenyan payslip — with a full worked example for a KSh 80,000 salary and the current NSSF Year 4 rates. - [UTM Parameters: A Practical Guide That Won't Ruin Your Analytics](https://turbotweaks.app/blog/utm-parameters-practical-guide): What utm_source, utm_medium and utm_campaign actually mean, the naming mistakes that fragment your reports, and a convention you can adopt today. - [JPG vs PNG vs WebP: Which Image Format Should You Actually Use?](https://turbotweaks.app/blog/jpg-vs-png-vs-webp-which-format): A decision guide to the three formats that matter on the web in 2026 — what each is good at, when to convert, and how much file size you can save.