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Office & Data

CSV to Excel Paste CSV and see it as a spreadsheet instantly, with numbers, dates and IDs typed the way Excel should hold them. Download a clean .xlsx only when you want it. Sign PDF Sign a PDF in your browser - draw, type or upload your signature, place it on any page, add the date, and download the signed copy. The file never leaves your device. Redact Permanently redact PDF, Word, Excel, PowerPoint, text and image files. Matches and boxes are removed from the file itself, not covered up, and the result is checked again before you download it. What is my IP See the public IP address websites see when you connect, whether it is shared (CGNAT) or private, and what else your browser reveals. Case Converter & Line Tools Change text to UPPER, lower, Title or Sentence case, turn names into camelCase or snake_case, and remove duplicate lines or sort a list. Text Compare Paste two versions of a text to see every added, removed and changed line, with the changed words highlighted.

Writing & Proposals

Tone Polish Reformat what you wrote with proper grammar, structure and articulation - in your own voice. One paste, one reply, no chat session. Freelance Proposal Generator Describe a client problem and get a scoped, priced, ready-to-send freelance proposal in seconds.

Legal & Compliance

IP Law Q&A Chatbot Ask questions about Indian IP law - trade marks, patents, copyright, designs and more, with the web search results it used listed above each answer. Patent FER Reply Generator Paste the objections from a First Examination Report to draft a structured reply, or upload a draft for an IP risk review. Government Scheme Eligibility Finder Answer a short set of questions once. Sign in and we save your answers, so you can check which central government schemes you may qualify for without retyping them.

Privacy & Security

Website Security Scan Scan a domain for real, reproducible security weaknesses. Every finding carries the observation behind it and the command to verify it yourself. Image Scrub See exactly what your photo reveals about you - GPS, camera serial, your name - then strip it. Crop, resize, blur faces and convert, all without the image being stored anywhere.

Developer Tools

JSON Formatter Beautify, minify and validate JSON in one paste - with the exact line and column when it will not parse, and a count of what is actually in the document. Python Formatter Reformat Python the way Black would, with the line length and quote handling you choose - and a count of exactly how many lines changed. HTML Viewer Paste HTML and see it rendered live in a sandbox, at phone, tablet or desktop width - with beautify, minify, a console for scripts and a report of what is broken in the markup. IP Subnet Calculator Enter CIDR notation or an IP with a netmask and get the network address, broadcast address, usable host range and total address count instantly. Encode / Decode Encode or decode Base64, Base64URL, URL percent-encoding, HTML entities and hex as you type, with full UTF-8 support. Unix Timestamp Converter Convert a Unix epoch timestamp in seconds, milliseconds, microseconds or nanoseconds to a date in UTC or a major world time zone, and a date back to a timestamp. System Diagram Maker Type arrows like User -> API -> Database and get a laid-out architecture or flow diagram. Fold groups into one box for the big picture, number the steps for a detailed flow.

AI Workbench

AI Playground Compare responses from multiple LLM providers side by side in real time. Bring your own API keys. Agent Playground Experiment with AI agents that use tools - web search, a calculator, URL fetching - across multiple providers.

Learning

Study Buddy An interview-prep coach for top tech jobs, from the first study day to an accepted offer: a plan across DSA, LLD, system design, behavioural and AI-assisted coding, mock interviews, a resume review, an applications tracker and offer comparison.

Everyday Helpers

QR Code Generator Create QR codes from text, URLs, WiFi credentials or contact info - as PNG images or SVG vectors, with the error correction level you choose. Unit Converter Convert between length, weight, temperature, volume, speed, area and energy units instantly - 40+ unit types with instant results. Password Generator Generate a random password with cryptographically secure randomness, tune its length and character types, and see its strength in bits of entropy. Word Counter & Readability Analyzer Count words, characters, sentences and paragraphs, estimate reading time, and score readability - with true character-based counting for Chinese, Japanese, Korean and Thai text. Age / Date Difference Calculator Find someone's exact age, or the exact difference between any two dates - years, months and days, plus the total number of days and weeks. Date Difference Calculator Count the days, weeks, months and working days between two dates, or add and subtract days from a date. Percentage Calculator Calculate X% of Y, what percent one number is of another, percentage increase or decrease between two numbers, or reverse percentage - four common calculations in one tool. SIP Calculator See what a monthly investment grows to, with a yearly step-up, a starting lump sum and inflation, or find the monthly amount a goal needs. BMI Calculator Calculate your Body Mass Index (BMI) from height and weight, in metric or imperial units, classified against the WHO adult categories - underweight, normal, overweight, obese.
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All toolsOffice & Data

Redact

Remove names, numbers and anything else from a PDF, Word, Excel, PowerPoint, text file or image so it cannot be recovered. Not covered up: gone.

or drag it here

PDF, DOCX, XLSX, PPTX, TXT, CSV or an image. Up to 25 MB; PDFs up to 40 pages.

Why a black box is not enough

A black rectangle drawn over PDF text only hides it: the text is still in the file and can be copied out. Blur and pixelation can often be reversed. Word files keep deleted text in tracked changes, plus your name in the properties and a preview picture of the first page.

This tool removes the data itself. PDF pages are rebuilt from pixels, so no text layer, fonts, comments, form fields, attachments or history survive. Office files are rewritten part by part. Images get solid boxes and lose all metadata. The result is searched again before you get it, and if anything is still found, no file is returned.

About Redact

A black box drawn over a PDF hides text on screen, but the words stay in the file and come back with copy and paste. Blur can often be reversed, and Word files keep deleted text and your name. This tool removes the data itself and checks the result again before you download it.

What it does

  • Find words, names and numbers, even when they are split across lines or formatting.
  • Catch emails, phone numbers, card numbers, IBANs, Aadhaar, PAN, US SSNs and IP addresses.
  • PDF pages are rebuilt from pixels: no hidden text, comments, attachments or metadata survive.
  • Word, Excel and PowerPoint lose tracked deletions, author names and the preview picture.

How it works

  1. 1 Open a PDF, Office, text or image file.
  2. 2 Type the words to remove, tick data types and draw boxes where needed.
  3. 3 Press Redact and download.

Why a black box is not a redaction

A PDF keeps its text separate from how the page looks. A shape on top changes only what you see: the text underneath can still be copied or searched. Here each page becomes an image, matches are painted black in the pixels and a new PDF is written, so nothing is left underneath.

Scanned pages and photos

Text in a scan or a photo is pixels, so it cannot be searched. The preview flags PDF pages with no text: draw solid boxes over what to remove on those pages and on images. Blur is never used, because it can be reversed.

What gets cleaned inside Word, Excel and PowerPoint

An Office file is a zip of XML parts, and every part is rewritten, not just the page you see: headers, footers, footnotes, comments and their authors, speaker notes, chart labels, link targets, pivot caches and hidden sheets, rows and columns. Each match becomes [REDACTED]. Tracked deletions are dropped, the author, last editor and company fields are cleared and the saved preview picture is removed. Word, Excel and PowerPoint files embedded inside are redacted too.

Questions

Can the redacted text be recovered?

No. A redacted PDF holds only page images with black areas, and in Office and text files each match is replaced by [REDACTED]. The result is searched again and only returned if nothing is found.

Is my file stored?

No. The file is processed in memory during the request and sent straight back. Nothing is saved and no text from it is logged.

Which files are supported?

PDF up to 40 pages, DOCX, XLSX, PPTX, plain text files such as TXT and CSV, and images, each up to 25 MB. Save old .doc or .xls files as .docx or .xlsx first.

Can I use it from ChatGPT or Claude?

Yes, through the Discuvr MCP server at mcp.discuvr.org: redact_text removes data from text, and find_sensitive_data counts it without returning it.

Why did it also flag a date or an order number?

The data types are patterns, and some are broad. Phone numbers match any run of 8 to 15 digits with spaces, dashes or brackets, so a date like 12-11-2026 or a long order number is caught too. The others are stricter: a card number must pass the Luhn checksum (4111 1111 1111 1111 does), an IBAN must pass the mod-97 check, a PAN is five letters, four digits and a letter (ABCDE1234F), a US SSN counts only in the 123-45-6789 form, and an IP must be a valid IPv4 address. Aadhaar is any 12 digits starting with 2 to 9, with no checksum. Press Find matches first, read the list, and untick a type that catches too much, or type the exact values instead.

How do I check that a redacted PDF is really clean?

Open the downloaded PDF, press Ctrl+F (Cmd+F on a Mac) and search for a removed name, then try to select and copy text on the page. In a file from this tool neither works anywhere, because every page is now a picture. The trade-off is that the whole PDF can no longer be searched or selected, and the file grows with Output quality: 150, 200 or 300 dpi, where 150 is the default and fine for reading and 300 suits small print. Run the same test on a PDF redacted elsewhere: if Ctrl+F still finds the word, or copy and paste brings it back, it was only covered up.

Does it catch names in hidden Excel sheets, comments and formulas?

Yes. Hidden sheets, hidden rows and columns, cell comments and pivot caches are stored in the file like any other cell, and all of them are rewritten. A name typed inside a formula is replaced too, which changes what that formula does. A matching number, such as a phone number stored as a number, cannot hold the word [REDACTED], so its cell becomes a text cell and loses any formula. Formulas that used that cell may then show an error or a different total when Excel recalculates, so check your totals before you send the file.

What does it not clean inside an Office file?

Pictures, macros and embedded objects other than Word, Excel and PowerPoint files. A screenshot, scanned signature or photo inside a DOCX is copied unchanged, so it still shows what it showed and keeps its own metadata; the preview warns you when a file has any. To remove what a picture shows, save the document as PDF and redact the PDF, where you can draw solid boxes over it, or redact the picture on its own as an image file. Text in the document is still cleaned as usual.