# ConduitTools > Free online tools by Conduit Code Labs for PDFs, images, text, conversions, generators, calculators, payroll and tax, dates, SEO, and development. The tools work in the browser without an account or installation. Tool inputs and files are processed on the user's device. Analytics, hosting, model downloads, and submitted contact messages involve network requests; see the privacy policy for details. Only available tools are listed below. Check each tool's page for supported formats, limits, and instructions. This index provides site context; crawler access is governed by robots.txt. ## Start here - [ConduitTools](https://tools.conduitcodelabs.com/): Homepage and tool search. - [All tools](https://tools.conduitcodelabs.com/tools): Complete directory grouped by category. ## PDF - [PDF Compressor](https://tools.conduitcodelabs.com/pdf-compressor): Reduce PDF file size for email, forms, and online uploads. - [PDF Merge & Split](https://tools.conduitcodelabs.com/pdf-merge-split): Combine PDFs, or pull out the pages you need, without uploading the files. - [PDF to Images](https://tools.conduitcodelabs.com/pdf-to-images): Convert PDF pages into downloadable JPG or PNG images. - [Image to PDF](https://tools.conduitcodelabs.com/image-to-pdf): Turn JPG, PNG, and WebP images into one organized PDF without uploading them. ## Images - [Image Converter & Compressor](https://tools.conduitcodelabs.com/image-converter): Convert PNG, JPG, and WebP images, shrink file sizes, and resize in bulk without uploading anything. - [Image Cropper](https://tools.conduitcodelabs.com/image-cropper): Crop photos with freeform or preset aspect ratios, rotate or flip them, set an exact output size, then export as JPG, PNG, or WebP. - [Image Canvas Resizer](https://tools.conduitcodelabs.com/image-canvas-resizer): Set a custom canvas size in px, inches, cm or mm, or pick A4, Letter or a product square, then place, resize and centre your image on it, with its background removed if you like. Several pages, PNG, JPG, WebP or PDF. - [HEIC to JPG / PNG Converter](https://tools.conduitcodelabs.com/heic-to-jpg): Convert HEIC and HEIF photos from an iPhone into JPG or PNG that any computer, website, or app can open. - [Social Media Image Resizer](https://tools.conduitcodelabs.com/social-media-image-resizer): Crop and resize a photo to the exact size Instagram, Facebook, TikTok, YouTube, LinkedIn, and X expect. - [Passport / ID Photo Maker](https://tools.conduitcodelabs.com/passport-photo-maker): Crop a photo to a standard ID size such as 2x2 in or 35x45 mm, set a plain background, and build a print sheet. - [Drawing & Sketch Pad](https://tools.conduitcodelabs.com/drawing-pad): Draw freehand, add lines, arrows, rectangles, ellipses and text, erase, undo and redo, then export your sketch as a PNG, JPG or WebP. - [EXIF / Image Metadata Remover](https://tools.conduitcodelabs.com/image-metadata-remover): Remove EXIF, GPS, camera, date, and other metadata from one image or a whole batch, then download clean copies. - [EXIF / Image Metadata Viewer](https://tools.conduitcodelabs.com/image-metadata-viewer): See the camera, lens, date, and GPS details stored in a photo, and save a copy with the metadata removed. - [Aspect Ratio Calculator](https://tools.conduitcodelabs.com/aspect-ratio-calculator): Calculate proportional width and height values for images, video, and layouts. - [Favicon Generator](https://tools.conduitcodelabs.com/favicon-generator): Make favicon.ico, browser, iPhone and Android icons and a web app manifest from one logo or a letter. - [Image to Text (OCR)](https://tools.conduitcodelabs.com/image-to-text): Extract editable text from screenshots, receipts, documents, and photos without uploading the image. - [Background Remover](https://tools.conduitcodelabs.com/background-remover): Remove backgrounds from portraits and clean product photos, then download a transparent PNG or solid-background JPG. ## Text - [Text Formatter](https://tools.conduitcodelabs.com/text-formatter): Change case, clean spacing, organize lines, find and replace text, then copy or export the result. - [Word & Character Counter](https://tools.conduitcodelabs.com/word-counter): Count words, characters, sentences, and reading time, check social and SEO length limits, and spot repeated keywords. - [Text Diff Checker](https://tools.conduitcodelabs.com/text-diff-checker): Compare two blocks of text and highlight added, removed, and changed lines and words, side by side or unified. ## Developer - [JSON Formatter](https://tools.conduitcodelabs.com/json-formatter): Format, validate, minify, and inspect JSON with readable errors. - [Base64 Encoder / Decoder](https://tools.conduitcodelabs.com/base64): Convert plain text to Base64 and decode Base64 strings locally. - [URL Encoder / Decoder](https://tools.conduitcodelabs.com/url-encoder): Encode URL components or turn encoded strings back into readable text. - [Hash Generator](https://tools.conduitcodelabs.com/hash-generator): Get MD5, SHA-1, SHA-256, SHA-384 and SHA-512 hashes of text or a file, and check a download against its checksum. - [JWT Decoder](https://tools.conduitcodelabs.com/jwt-decoder): Decode JWT headers and payloads locally without sending the token to a server. - [Regex Tester](https://tools.conduitcodelabs.com/regex-tester): Test regular expressions with live match highlighting and a readable match summary. - [SQL Formatter](https://tools.conduitcodelabs.com/sql-formatter): Format SQL queries into a cleaner, easier-to-read structure for PostgreSQL, MySQL, SQL Server and more. - [HTML, CSS & JavaScript Formatter](https://tools.conduitcodelabs.com/code-formatter): Pretty-print or minify HTML, CSS, and JavaScript in one place. ## Converters - [QR Code Reader](https://tools.conduitcodelabs.com/qr-code-reader): Scan QR codes from screenshots, images, or your camera. Copy the contents or inspect links before opening them. - [CSV / Excel Converter](https://tools.conduitcodelabs.com/excel-csv-converter): Turn an Excel workbook into CSV one sheet at a time, or build an Excel file from CSV data. - [Unit Converter](https://tools.conduitcodelabs.com/unit-converter): Convert length, weight, temperature, volume, speed and more between metric and imperial units, with feet and inches and the formula shown. - [JSON and CSV Converter](https://tools.conduitcodelabs.com/json-csv-converter): Convert JSON arrays to CSV and CSV data back into structured JSON. - [CSV to Markdown Table Converter](https://tools.conduitcodelabs.com/csv-to-markdown): Turn CSV data into a clean Markdown table ready to paste. - [JSON to TypeScript Converter](https://tools.conduitcodelabs.com/json-to-typescript): Generate TypeScript interfaces from representative JSON data. - [Markdown to HTML Converter](https://tools.conduitcodelabs.com/markdown-to-html): Convert Markdown into clean HTML markup, with a safe live preview. - [JSON and YAML Converter](https://tools.conduitcodelabs.com/json-yaml-converter): Convert between JSON and YAML while preserving the data structure. ## Generators - [Barcode Generator & Scanner](https://tools.conduitcodelabs.com/barcode-generator): Create Code 128, Code 39, EAN-13, and UPC-A barcodes, and read a barcode from an image or your camera. - [QR Code Generator](https://tools.conduitcodelabs.com/qr-code-generator): Create QR codes for links, Wi-Fi, WhatsApp, phone numbers, contacts, and other shareable data, styled your way. - [Branded QR Code Generator](https://tools.conduitcodelabs.com/branded-qr-code-generator): Weave your logo into a QR code or add it in the center, choose brand colors, and download scan-checked PNG or SVG artwork. - [Invoice Generator](https://tools.conduitcodelabs.com/invoice-generator): Build a clean invoice with line items, discount, tax, and shipping, then download it as a PDF from your browser. - [Signature Maker](https://tools.conduitcodelabs.com/signature-maker): Draw or type a signature and export it as a transparent PNG ready to drop into a document. - [Password Generator](https://tools.conduitcodelabs.com/password-generator): Create strong passwords and passphrases locally with configurable length and character sets. - [Lorem Ipsum Generator](https://tools.conduitcodelabs.com/lorem-ipsum-generator): Generate placeholder paragraphs, sentences, words, or lists for mockups. - [Dummy Data Generator](https://tools.conduitcodelabs.com/dummy-data-generator): Build sample records from the fields you pick, such as names, emails, phone numbers, addresses, companies and dates, then export them as JSON, CSV, SQL or a table. - [UUID Generator](https://tools.conduitcodelabs.com/uuid-generator): Generate random v4 or time-ordered v7 UUIDs in bulk, and check the version of any UUID you paste. ## SEO & Marketing - [Slug Generator](https://tools.conduitcodelabs.com/slug-generator): Turn titles and phrases into clean, lowercase, URL-ready slugs. - [UTM Link Builder](https://tools.conduitcodelabs.com/utm-link-builder): Add campaign tracking parameters to any URL and keep your naming consistent. - [Meta Tag & Open Graph Generator](https://tools.conduitcodelabs.com/meta-tag-generator): Write title, description, and social share tags with a live Google, Facebook, and X preview. - [JSON-LD Schema Generator](https://tools.conduitcodelabs.com/json-ld-generator): Build FAQ, Article, Product, and other structured data markup from a simple form. ## Color & CSS - [Color Contrast Checker](https://tools.conduitcodelabs.com/color-contrast-checker): Check foreground and background colors against WCAG AA and AAA contrast thresholds. - [Color Converter](https://tools.conduitcodelabs.com/color-converter): Convert a color between HEX, RGB, HSL, OKLCH, HSV and CMYK with a live picker. - [PX to REM Converter](https://tools.conduitcodelabs.com/px-to-rem): Convert between pixels, rem, and em for any base font size. - [CSS Gradient Generator](https://tools.conduitcodelabs.com/css-gradient-generator): Design linear, radial, and conic gradients visually and copy the CSS. - [CSS Box Shadow Generator](https://tools.conduitcodelabs.com/css-box-shadow-generator): Layer and tune box shadows with a live preview, then copy the CSS. - [CSS Filter Generator](https://tools.conduitcodelabs.com/css-filter-generator): Find a CSS filter that turns a black icon into any color, or build blur, grayscale and sepia filters with live preview. ## Calculators - [Online Calculator](https://tools.conduitcodelabs.com/online-calculator): Work through sums with a standard and scientific calculator: powers, roots, logarithms, trigonometry, constants, memory keys, and a tape of everything you worked out. - [Percentage Calculator](https://tools.conduitcodelabs.com/percentage-calculator): Work out a percentage of a number, what percentage one number is of another, and percentage increase or decrease. - [Discount Calculator](https://tools.conduitcodelabs.com/discount-calculator): Find the sale price and the money saved from a discount, including a second stacked discount and sales tax. - [Age Calculator](https://tools.conduitcodelabs.com/age-calculator): Turn a date of birth into an exact age in years, months, and days, with the next birthday and a day countdown. - [Date Difference Calculator](https://tools.conduitcodelabs.com/date-difference-calculator): Count the days, weeks, months, and years between two dates, with an option to include both dates. - [Business Days Calculator](https://tools.conduitcodelabs.com/business-days-calculator): Count working days between two dates, skipping weekends and the holidays you add, with the Philippine national holidays a tap away. ## Payroll & Tax - [Philippines Salary Calculator](https://tools.conduitcodelabs.com/philippines-salary-calculator): Work out take-home pay after SSS, PhilHealth, Pag-IBIG and withholding tax, with what the employer pays on top and the totals for a year. - [MP2 Calculator](https://tools.conduitcodelabs.com/mp2-calculator): See how MP2 savings grow over five years at the dividend rates Pag-IBIG has declared, saved monthly or once, compounded or paid out. - [SSS Contribution Calculator](https://tools.conduitcodelabs.com/sss-contribution-calculator): Find the monthly salary credit and the SSS contribution for employees, kasambahay, the self-employed, voluntary members and OFWs. - [PhilHealth Contribution Calculator](https://tools.conduitcodelabs.com/philhealth-contribution-calculator): Work out the 5% PhilHealth premium and how it is split between employee and employer, with the ₱10,000 floor and ₱100,000 ceiling. - [Pag-IBIG Contribution Calculator](https://tools.conduitcodelabs.com/pag-ibig-contribution-calculator): Compute monthly Pag-IBIG Fund savings for employees, kasambahay, the self-employed and OFWs, on the ₱10,000 maximum fund salary. - [BIR Withholding Tax Calculator](https://tools.conduitcodelabs.com/bir-withholding-tax-calculator): Find the withholding tax on a daily, weekly, semi-monthly or monthly payroll from the BIR table, or the income tax for a whole year. - [13th Month Pay Calculator](https://tools.conduitcodelabs.com/13th-month-pay-calculator): Calculate 13th month pay from a fixed salary, month by month or a yearly total, and see how much stays tax-free under the ₱90,000 limit. - [VAT Calculator](https://tools.conduitcodelabs.com/vat-calculator): Add VAT to a price or take it out of one, using the standard VAT or GST rate of dozens of countries or any rate you enter. ## Date & Time - [Time Zone Converter](https://tools.conduitcodelabs.com/time-zone-converter): Compare the time in any two places, see the time difference, convert a date and time between time zones, and find when working hours overlap. - [Stopwatch & Timer](https://tools.conduitcodelabs.com/stopwatch-timer): An online stopwatch with laps, countdown timers that ring when time is up, and an alarm clock with repeat days, snooze and any country's time. - [Pomodoro Timer](https://tools.conduitcodelabs.com/pomodoro-timer): Run focus and break cycles with a task list, session counts, alarm sounds, piano, jazz, lo-fi and guitar focus music, and a full-screen timer you can theme or set your own photo behind. - [Unix Timestamp Converter](https://tools.conduitcodelabs.com/unix-timestamp-converter): Convert Unix timestamps to readable dates in two time zones side by side, and readable dates back to Unix time. - [Cron Expression Explainer](https://tools.conduitcodelabs.com/cron-expression-explainer): Translate cron expressions into plain English and see the next times they run in any time zone. ## Optional - [About](https://tools.conduitcodelabs.com/about): What the project does and how it is built. - [FAQs](https://tools.conduitcodelabs.com/faqs): File privacy, processing, browser support, keyboard shortcuts, and troubleshooting. - [Changelog](https://tools.conduitcodelabs.com/changelog): Recent improvements. - [Contact](https://tools.conduitcodelabs.com/contact): Questions, feedback, and problem reports. - [Privacy policy](https://tools.conduitcodelabs.com/privacy): Information handling and site services. - [Disclaimer](https://tools.conduitcodelabs.com/disclaimer): Usage limitations. - [Security contact](https://tools.conduitcodelabs.com/.well-known/security.txt): Private vulnerability reporting. - [Conduit Code Labs](https://conduitcodelabs.com/): The studio behind ConduitTools.