Every Sigma Wire Tool
Free, fast utilities for PDFs, images, text, email and code. No account, no limits, and most of them never send your file anywhere.
Featured tools
The ones people reach for most.
Image to URL Converter
Upload an image and get a permanent direct link, plus a QR code for it.
Email Validator
Check syntax, MX, SPF, DMARC and the live mailbox behind any address.
PDF Tools Suite
Merge, split, rotate, stamp and convert PDF files - seventeen tools in one place.
Disposable Email Checker
Detect throwaway and temporary mail domains before they reach your list.
CodePen Editor
Write HTML, CSS and JavaScript with a live preview and a focus mode.
Image to Base64 Converter
Turn any image into a Base64 data URI without uploading it anywhere.
Latest tools
Recently published and rebuilt.
JWT Decoder
Decode a JWT header and claims, see expiry as dates, and verify HS, RS, PS or ES signatures in your browser.
Image to Text Converter
Extract text from screenshots, photos and scans with OCR that runs in your browser.
Redirect Checker & URL ExpanderNew
Trace every hop of a link: 301/302, meta refresh and JavaScript redirects, short links, and what Googlebot or a phone sees.
URL ExpanderNew
Expand bit.ly, TinyURL, t.co or any short link and see the real destination before you click.
Bulk Redirect CheckerNew
Check up to 50 URLs at once and test old-to-new redirect maps after a site migration.
301 Redirect CheckerNew
Find out whether a redirect is a permanent 301 or a temporary 302, hop by hop.
Browse all tools
Filter by category, or search by name above.
Image Tools 4 tools
Image Metadata Viewer
Read EXIF data from a photo: camera, lens, dimensions and location.
Image to Base64 Converter
Turn any image into a Base64 data URI without uploading it anywhere.
Image to Text Converter
Extract text from screenshots, photos and scans with OCR that runs in your browser.
Image to URL Converter
Upload an image and get a permanent direct link, plus a QR code for it.
PDF Tools 18 tools
Add Page Numbers to PDF
Stamp page numbers onto a PDF with control over position and format.
Add Watermark in PDF
Place a text or image watermark across every page of a document.
Excel to PDF Converter
Turn a spreadsheet's data into a clean, readable PDF table.
Extract Pages From PDF
Pull selected pages out of a PDF into a new file of their own.
Image to PDF Converter
Turn photos and scans into a single PDF with page size control.
Image to PDF Maker
Build a PDF from images, arranging and rotating them before export.
Markdown to PDF Converter
Render Markdown into a typeset PDF with headings, code and tables.
Merge PDF Tool
Combine several PDF files into one document in the order you choose.
PDF Split Tool
Split one PDF into separate files by page range or at every page.
PDF Tools Suite
Merge, split, rotate, stamp and convert PDF files - seventeen tools in one place.
PDF to Grayscale
Convert a colour PDF to grayscale for cheaper and cleaner printing.
PDF to Image Converter
Render each PDF page as a PNG or JPG image at the quality you pick.
PDF to Text
Extract the selectable text from a PDF as plain, copyable text.
PDF to Text OCR
Read text out of scanned pages and images using optical recognition.
Rearrange PDF Pages
Drag pages into a new order and export the reordered document.
Remove Pages From PDF
Delete the pages you do not need and download the shorter document.
Rotate PDF
Turn sideways or upside-down pages the right way up and save the file.
Webpage to PDF Converter
Save a public web page as a clean reading copy, without the menus and ads.
Email Tools 2 tools
Text Tools 22 tools
Backwards Text Generator
Reverse the character order of any line of text instantly.
Binary Code Translator
Translate between readable text and binary in either direction.
Bold Text Generator
Produce bold Unicode letters that survive in places without formatting.
Case Converter
Switch text between upper, lower, title, sentence and toggle case.
Fancy Text Generator
Convert plain text into decorative Unicode styles for bios and posts.
Italic Text Generator
Create italic Unicode text for profiles, captions and messages.
Mirror Text Generator
Flip text horizontally so it reads correctly in a mirror.
Morse Code Translator
Convert text to Morse code and decode Morse back into letters.
Morse Code Translator With Audio
Translate to Morse and play the result as adjustable audio tones.
Remove Line Breaks
Strip hard line breaks out of pasted text while keeping paragraphs.
Remove Words and Characters
Delete chosen words, symbols or characters from a block of text.
Sentence Case Converter
Rewrite text so each sentence starts with a single capital letter.
Small Text Converter
Turn normal letters into small caps and superscript-style characters.
Strikethrough Text Generator
Cross out text with Unicode strikethrough that pastes anywhere.
Text Compare
Put two blocks of text side by side and highlight every difference.
Title Case Converter
Capitalise headlines correctly, keeping small words in lower case.
Underline Text Generator
Add combining underlines to text that plain fields cannot style.
Unicode Text Converter
Render one string in dozens of Unicode alphabets at the same time.
Upside Down Text Generator
Rotate text 180 degrees using inverted Unicode characters.
Wide Text Converter
Convert text into full-width characters for a spaced-out look.
Word Counter
Count words, characters, sentences and reading time as you type.
Zalgo Glitch Text Generator
Stack combining marks on text to create a glitched, distorted effect.
Developer Tools 16 tools
Base64 Encode
Encode text to Base64 and decode Base64 back to readable text.
CodePen Editor
Write HTML, CSS and JavaScript with a live preview and a focus mode.
Color Palette
Build colour palettes and copy values as HEX, RGB or HSL.
Hex to Decimal Converter
Convert hex, decimal, octal and binary at once, with two-s complement for negative values.
Hex to RGB Converter
Convert hex to RGB and RGB to hex, with shorthand, 8-digit alpha and Android ARGB order.
JSON Beautifier
Convert CSV into structured JSON and tidy the output for reading.
JSON Formatter
Format, validate and inspect JSON with clear error positions.
JWT Decoder
Decode a JWT header and claims, see expiry as dates, and verify HS, RS, PS or ES signatures in your browser.
Mock Data Generator
Produce realistic sample records as JSON or CSV for testing.
Random Name Generator
Generate first and last names for test data, characters and mockups.
Random String Generator
Generate random strings with the length and character set you choose.
Slugify Online
Turn any title into a clean, lowercase URL slug ready to publish.
Strong Password Generator
Create long, high-entropy passwords entirely inside your browser.
URL Decoder
Encode and decode percent-encoded URLs and query strings.
UUID Generator
Generate UUID v4 and v7 in bulk, made in your browser with a cryptographic random source.
Web Formatter
Beautify or minify HTML, CSS and JavaScript in one editor.
SEO Tools 10 tools
301 Redirect CheckerNew
Find out whether a redirect is a permanent 301 or a temporary 302, hop by hop.
Bitly Link CheckerNew
Preview where a bit.ly link goes, or check that your own Bitly links still work.
Bulk Redirect CheckerNew
Check up to 50 URLs at once and test old-to-new redirect maps after a site migration.
Google Search Preview Test
Preview how a title and description will appear in search results.
Image Alt Text Extractor
List every image on a page with its alt text, to find what is missing.
Meta Tag Extractor
Pull the title, description, canonical and social tags from any page.
Redirect Checker & URL ExpanderNew
Trace every hop of a link: 301/302, meta refresh and JavaScript redirects, short links, and what Googlebot or a phone sees.
TinyURL ExpanderNew
Expand any TinyURL link or alias and see its destination without opening it.
URL ExpanderNew
Expand bit.ly, TinyURL, t.co or any short link and see the real destination before you click.
t.co Link ExpanderNew
Paste a t.co link or a whole post from X and see where every link really goes.
Network Tools 4 tools
Bulk IP Lookup
Resolve a whole list of IP addresses at once and export the results.
DNS Record Checker
Query A, AAAA, MX, TXT, NS and CNAME records for any domain.
IP Lookup
Look up any IP address for location, ISP, ASN and WHOIS details.
Reverse IP Lookup
Find the domains that are hosted on a given IP address.
Calculators 6 tools
BODMAS Calculator
Evaluate expressions in correct operator order, step by step.
Fraction Calculator
Add, subtract, multiply and divide fractions with simplified results.
Percentage Calculator
Work out percentages, increases, decreases and differences quickly.
Random Number Generator
Generate random numbers in a range, with or without repeats.
Scientific Calculator
Trigonometry, logarithms, powers and roots, in degrees or radians.
Time Card Calculator
Add up worked hours across a week, including breaks and overtime.
Converters 2 tools
Utilities 4 tools
Bulk URL Opener
Paste a list of links and open them all in tabs, entirely in your browser.
QR Code Generator
Create a QR code for a link, text or contact card and download it.
Thumbnail Downloader
Grab the cover thumbnail from a YouTube, Vimeo or Dailymotion video.
What Windows Version Do I Have
Detect Windows 11 or Windows 10 in your browser, with the build number and whether it still gets security updates.
Try a shorter word, or clear the search to see all 88 tools.
Guides
Reference lists kept up to date alongside the tools.
Questions
Are these tools free to use?
Yes. Every tool listed here is free, with no account, no signup and no daily cap on the web version.
Do I need to install anything?
No. Each tool runs in the browser. Several of them, including the text, password and Base64 tools, never send your input anywhere at all.
Is my data uploaded to a server?
It depends on the tool. Anything that can be done in the browser is done in the browser. Where a server is genuinely required, such as a live mailbox check or optical character recognition, the tool says so on its own page.
Can I use these tools on a phone?
Yes. Every tool is built mobile first and works on a small screen without pinching or horizontal scrolling.