128 catalog entries
Find a tool by task
Search the catalog or browse by category. Each tool page explains what the utility is for, gives a practical example, and identifies when an interactive workspace is not yet available.
Text Tools
Text utilities are useful for repeatable cleanup and quick checks: preparing copy for a form, normalizing a list, comparing revisions, or checking length before publishing. Choose a transformation that preserves the meaning you need, then review the result before replacing the original.
Word & Character Counter
Count words and characters to check copy length before submitting a form, editing a headline, or sharing a draft.
Case Converter
Change text capitalization for a consistent heading, sentence, or identifier style without retyping each line.
URL Slug Generator
Turn a readable title into a compact URL-friendly slug, then review it for clarity and stable naming.
Remove Extra Spaces & Line Breaks
Normalize repeated spaces or line breaks when pasted text contains accidental spacing, while preserving the original for comparison.
Text Diff Checker & Line Comparator
Compare two text versions to spot additions, removals, or changed lines during editing and review.
Join Lines & Merge Text Lists
Reformat a multi-line list into a single delimited line or another convenient arrangement for a form or script.
Count Word / Letter Occurrences
Count how often a chosen word, phrase, or character appears when reviewing repeated terms or a data sample.
Reverse Text & Reverse Word Order
Reverse character order or word order for text experiments, puzzles, or a simple transformation.
Extract Initials / Monogram Generator
Create initials from a name or phrase for a quick monogram or compact label.
Line Sort (Alpha, Numeric, Length, Natural)
Sort lines alphabetically, numerically, or by length to organize a list before review or processing.
Duplicate Line Remover
Find repeated lines in a list and create a deduplicated copy for cleanup or comparison.
Add Line Numbers / Prefix / Suffix
Add numbering or consistent text around each line when preparing examples, notes, or a batch input.
Text to NATO Phonetic Alphabet
Spell letters with the NATO phonetic alphabet to make a short identifier easier to communicate aloud.
Code & Developer Tools
Developer utilities help inspect and reshape data formats without opening a full project. They are handy for a small JSON payload, a URL component, a snippet of markup, or a regular expression test; they are not a substitute for your project’s parser, tests, or security review.
JSON Formatter, Validator & Minifier
Inspect JSON syntax and make a payload easier to read or more compact for a request or configuration.
JSON to YAML / YAML to JSON Converter
Convert a JSON or YAML document when a tool or configuration expects the other representation.
JSON Key Sorter & Tree Viewer
Organize JSON keys or inspect nested JSON as a hierarchy when a long object is hard to scan.
Base64 Encode / Decode (Text & Image)
Encode text or image data as Base64, or decode a Base64 representation back to its underlying content.
URL Encode / Decode
Encode or decode URL components so reserved characters are represented correctly in a query or path.
HTML Minifier / Formatter
Make an HTML snippet easier to inspect or reduce whitespace for a compact output.
CSS Minifier / Formatter
Reformat CSS for inspection or compact a stylesheet snippet as part of a delivery workflow.
JavaScript Minifier (Basic)
Create a basic compact version of a JavaScript snippet for experimentation; it is not a full compiler or production bundler.
SQL Formatter & Uppercaser
Improve the readability or keyword casing of a SQL query before discussing or reviewing it.
HTML Entity Encode / Decode
Represent special characters with HTML entities or decode entities while inspecting markup and text.
Unicode Escape / Unescape
Inspect or transform Unicode escape sequences when debugging serialized text or code.
Hex & Binary Encode / Decode
Translate between byte-oriented hexadecimal and binary representations when inspecting low-level values.
JWT Decoder (Header, Payload, Signature)
Read the header and payload portions of a JSON Web Token for debugging; decoding alone does not verify the signature.
Regex Tester & Match Highlighter
Try a regular expression against sample text and inspect matches before using the pattern in code.
htaccess Redirect Generator
Draft Apache rewrite or redirect rules for a URL migration, then review them against the server’s configuration.
CSS Gradient Generator
Compose a CSS gradient value for a background and evaluate whether it remains readable behind content.
Box Shadow Generator
Explore CSS box-shadow values to create depth or separation for a user-interface element.
Image & Graphic Tools
Image utilities can help prepare assets for a website, document, presentation, or app. Pick dimensions and output format for the actual destination: a photo, a transparent logo, and a small interface icon have different quality and file-size needs.
Image Compressor & Resizer
Prepare an image at more suitable dimensions or file size for a page, message, or document.
Image Format Converter (PNG, JPG, WebP, AVIF)
Convert an image between supported file formats when a destination has a specific compatibility or transparency requirement.
Color Picker, Converter & Palette Extractor
Inspect a color or derive a palette from an image to help keep interface and graphic colors consistent.
Favicon & App Icon Generator
Prepare icon assets for a website or app using the source artwork and the destination’s size requirements.
Image Cropper & Aspect Ratio Calculator
Crop an image to a target composition or calculate a ratio that matches a display slot.
SVG to PNG / PNG to SVG Vector Converter
Rasterize an SVG for a context that needs pixels, or inspect the difference between vector artwork and a raster image.
Watermark Adder (Text & Image)
Place a text or image watermark on a copy of an image to identify a draft or communicate ownership.
Conversion Tools
Converters are most useful when source and destination formats are explicit. Confirm the units, character encoding, time zone, color model, or rate source before interpreting a result; values that look similar can follow different conventions.
Unit Converter (Length, Weight, Temp & More)
Convert a measurement between supported units while keeping the source unit and required precision explicit.
Number Base Converter (Base 2–36)
Translate an integer between positional bases from binary through base 36 for computing or learning.
Bytes & Data Storage Converter
Compare data sizes across byte-based units when planning a file transfer, storage quota, or upload.
Color Converter (HEX ↔ RGB ↔ HSL)
Translate a color value between common HEX, RGB, and HSL representations for design or CSS work.
Text to ASCII Codes / ASCII to Text
Inspect character codes for basic text when debugging a protocol or learning how ASCII represents characters.
Currency Converter (Cached Rates)
Estimate one currency amount in another only when a reliable, current exchange-rate source is available.
Time & Timezone Converter
Compare a time across locations when coordinating an event, while making the source and destination zones explicit.
Generators
Generators create starting material—identifiers, sample data, text, or codes—so you can move a task forward quickly. Decide whether the output is for a mock-up, a label, or a production secret before choosing a generator.
UUID / GUID Generator (v1, v4)
Create UUID-style identifiers for test records or application data, selecting a version appropriate to the use case.
Secure Password & Passphrase Generator
Create a password or passphrase candidate with the length and character requirements accepted by the destination service.
QR Code Generator (Text, URL, WiFi, VCard)
Represent a short URL or text payload as a QR code for display on a screen or printed material.
Lorem Ipsum / Dummy Text Generator
Produce placeholder prose for a layout while real copy is being written.
Fake Data Generator (Names, Emails & More)
Create synthetic sample records for interface mock-ups or test fixtures without using real personal details.
Random String & API Secret Key Generator
Generate random-looking strings for examples or test environments; verify the generator and entropy before using any value as a secret.
Barcode Generator
Prepare a barcode from a value for a label or test, after confirming the symbology required by the scanner or workflow.
Password Strength Checker
Review password characteristics and identify choices that may make a password easier to guess.
SEO & Webmaster Tools
Technical SEO checks make page metadata and crawl directives easier to inspect, but a preview is only an estimate. Search engines choose how to crawl, index, and display pages, and their behavior can change independently of a generated snippet.
Meta Tag Preview / Google SERP Simulator
Draft page title and description metadata and preview how a search result might appear in limited space.
Open Graph Preview & Card Generator
Prepare social-sharing metadata and inspect a likely card layout before sharing a page.
robots.txt Generator & Validator
Draft robots.txt directives to express crawler access preferences for a website.
XML Sitemap Generator
Organize canonical public page URLs into an XML sitemap for crawler discovery.
SEO Slug Checker & Meta Length Checker
Review URL slugs and metadata length as editorial checks before publishing a page.
Heading Outline & Structure Inspector
Review heading order and hierarchy to find structural gaps in a page outline.
Keyword List Cleaner & Deduplicator
Clean repeated or inconsistent keyword lists before organizing research or editorial notes.
Redirect Header Checker Simulator
Reason about redirect status and header behavior while planning a URL change or troubleshooting a route.
YouTube & Content Creator Tools
Creator utilities can help prepare video references and organize metadata. Confirm that an ID, embed, or thumbnail belongs to the intended public video, and follow YouTube’s current policies and the creator’s rights when reusing media.
YouTube Thumbnail Downloader (HD / SD / MaxRes)
Find a video thumbnail reference for review or authorized use, using the public video identifier.
YouTube Channel ID / Video ID Extractor
Identify a channel or video identifier from a YouTube link when preparing a reference or embed.
YouTube Embed Code Generator
Prepare an iframe embed snippet for a video that is intended to be shown on another page.
Title & Description Keyword Extractor
Review words and phrases in creator-supplied titles or descriptions to help organize metadata.
YouTube Tag Generator & Hashtag Helper
Organize relevant video tags or hashtags as a starting point for creator metadata.
Social Media Tools
Social publishing helpers can make captions and profile links easier to prepare, but platform limits and rendering rules change. Preview the final post in the destination app, where line breaks, links, and character counts may differ.
Social Hashtag Generator & Organizer
Collect and organize hashtags around a specific topic before drafting a social post.
Bio Link / Social Link Builder Generator
Arrange profile links into a clear set of destinations for a social bio or creator profile.
Instagram / TikTok Line Break Formatter
Prepare caption line breaks for a cleaner reading layout on a social platform.
Character Counter for X, Threads & More
Check a draft’s character length against a selected platform’s current posting constraints.
Calculators & Financial Tools
Calculators are useful for exploring assumptions and checking arithmetic, not for replacing professional advice. Write down the inputs and conventions used so you can compare like with like.
Percentage Calculator (X% of Y, Increase / Decrease)
Answer common percentage questions, such as finding a portion or comparing a change between two values.
Compound Interest & Savings Calculator
Explore how an assumed return and compounding schedule affect a savings projection over time.
Loan / Mortgage EMI Calculator
Estimate a periodic loan payment from principal, interest rate, and term for an initial comparison.
Age Calculator & Date Difference Calculator
Calculate elapsed time between dates or an age on a specified date for planning and reference.
BMI & Calorie Requirement Calculator
Estimate BMI or calorie needs from entered measurements as general health information, not a diagnosis.
Discount & Sales Tax Calculator
Estimate a discounted price or add a stated sales-tax rate to a purchase amount.
Time & Date Tools
Date and time calculations depend on a clear reference point. Epoch values, calendar dates, time zones, and daylight-saving transitions are not interchangeable; make the time zone explicit when coordinating across locations.
Unix Timestamp Converter & Epoch Generator
Translate between a Unix timestamp and a human-readable date, checking whether the value is in seconds or milliseconds.
Countdown Timer & Date Counter
Count toward a target date or inspect the time remaining for an event or deadline.
Timezone Converter & World Clock Comparator
Compare local times across named time zones to find a workable time for a meeting or event.
Days Between Dates Calculator
Count the calendar-day interval between two dates for a schedule or planning check.
Network & Security Tools
Network and security helpers make common values easier to inspect, encode, or hash. They are educational and diagnostic aids: a digest is not encryption, an IP lookup is not proof of identity, and decoding a token does not verify who issued it.
My IP Address & User-Agent Inspector
Inspect network or browser information visible to a website for basic diagnostics.
HTTP Headers Inspector
Review HTTP response headers to understand caching, content type, or other server behavior.
URL / Domain Parser & Query String Extractor
Break a URL into its host, path, and query components when debugging a link or request.
Hash Generator (MD5, SHA-1, SHA-256, SHA-512)
Calculate a message digest for comparison or integrity checks using a selected hash algorithm.
HMAC SHA-256 Generator
Explore a keyed message authentication code for a sample message and secret during development.
ROT13 Cipher & Caesar Cipher Encoder / Decoder
Apply or reverse simple letter-shift ciphers for puzzles and demonstrations, not for protecting information.
Base64URL Encode / Decode
Encode or decode data using the URL-safe Base64 alphabet used in some web formats.
PDF & Document Helpers
Document helpers can save time on routine viewing, page arrangement, and drafting. Check the finished file in a standard PDF reader and preserve a clean original before changing pages or compressing a document.
PDF Viewer & Page Rotator (Browser WASM)
Review a PDF and correct page orientation when preparing a readable copy.
PDF Merger / PDF Splitter
Combine PDF files or separate pages to make a document set easier to distribute or review.
PDF Compressor (Client-side Execution)
Try to reduce a PDF’s file size for sharing or storage while checking for changes to its contents.
Printable Invoice & Receipt Generator
Draft a printable invoice or receipt layout with transaction details for later review.
Agreement & Business Letter Template Generator
Start a business letter or agreement draft from a reusable structure, then adapt it to the actual situation.
Merge PDF Files Online (Free)
Combine selected PDF files into one document, keeping the source files unchanged.
Split a PDF into Multiple Files (Free)
Separate a PDF into smaller documents by selecting the pages or ranges needed.
JPG to PDF Converter (Free, in Browser)
Place JPG images into a PDF for sharing or printing, with page layout and order checked before export.
Image to PDF Converter
Create a PDF from supported image files while preserving the intended sequence and page appearance.
Scanner App & Scan to PDF (Camera)
Capture or prepare scanned pages as a PDF for review and distribution.
PDF to JPG Converter — Extract Pages as Images
Render PDF pages as JPG images for previews or workflows that require raster pages.
Word (.docx) to PDF Converter (Free)
Convert a Word document to a PDF copy for stable viewing and printing.
Excel (.xlsx/.csv) to PDF Converter (Free)
Prepare spreadsheet content as a PDF for viewing or printing without requiring spreadsheet software.
PowerPoint (.pptx) to PDF Converter
Export presentation pages to PDF for review or distribution.
HTML to PDF Converter — Render Web Pages Locally
Render HTML content into a PDF snapshot for review or printing.
PDF to Word (Editable .doc)
Create an editable Word-style document from PDF content where conversion is supported.
PDF to Excel (.xlsx)
Extract tabular PDF content into a spreadsheet for further checking and analysis.
PDF to PowerPoint Slide Deck
Turn PDF pages into presentation slides for review or further editing.
Edit PDF — Annotate & Mark Up Pages Online (Free)
Add annotations or markups to a PDF copy for review without changing the original file.
Sign PDF — Draw a Signature on Any Page
Place a drawn signature mark on a PDF copy for a visual review workflow.
Rotate PDF Pages (Free, Client-side)
Rotate PDF pages to correct their displayed orientation while preserving the original document.
Organize PDF Pages — Reorder & Delete
Reorder or remove pages to create a more useful PDF copy.
Crop PDF Margins Online (Free)
Adjust the visible page area of a PDF to trim unwanted margins.
Add Page Numbers to a PDF (Free)
Add page-number labels to a PDF copy to make a document easier to navigate.
Watermark PDF — Add Text Watermarks
Overlay a text watermark on a PDF copy to mark a draft or communicate document status.
Protect / Encrypt PDF with Password
Apply password protection to a PDF when the selected reader and workflow support it.
Unlock a PDF (Remove Known Password)
Remove supported PDF restrictions when you already have authorization and any required password.
Repair & Recover a Damaged PDF
Attempt to recover readable content from a damaged PDF by creating a repaired copy.
Redact / Black Out Text in a PDF
Cover or remove selected PDF content when preparing a copy for disclosure.
Compare Two PDFs Side-by-Side
Review differences between two PDF versions to spot changed or missing content.
Fill & Flatten a PDF Form (Free)
Enter information into supported PDF form fields and export a completed copy.
OCR — Extract Text from Scanned PDFs / Images
Recognize text in scanned pages to make a searchable text layer or extractable draft.
AI Document Summarizer (Offline, Free)
Create a concise draft summary of document text to support initial review.
Translate a PDF's Text to Another Language
Translate extractable document text into another language for an initial reading copy.
PDF to Markdown Converter
Convert PDF text and headings into a Markdown draft for editing or documentation.
Convert PDF to Archival PDF/A (Free)
Prepare a PDF for an archival-oriented PDF/A workflow when supported by the converter.
Free API & Developer Helper Hub
API helpers are useful for learning request and response formats, but external services have their own terms, availability, limits, and data handling. Keep credentials private and verify which host receives a request before sending it.
Live Free API Directory (DNS, WHOIS, Geo, Weather)
Explore public API categories and documentation as a starting point for a small prototype.
AI Key API Sandbox (Bring Your Own Key)
A bring-your-own-key AI test needs especially careful review of the provider, request payload, and key scope.
Icon Library Hub
Icon search can speed up interface work, but the best choice is the one that stays consistent with the product’s visual language and accessibility needs. Check the source set’s license and the icon’s intended usage before shipping it.
Website Starter Templates Hub
Starter templates are scaffolding, not finished products. Adapt structure, content, responsive behavior, and accessibility to your audience before publishing; remove sample content that does not describe your service.
Website Starter Templates (Landing, Portfolio, Blog)
Choose a landing-page, portfolio, blog, or pricing-page starting point to reduce repetitive setup.
ZIP / Code Snippet Download Helper
Package or retrieve a code snippet as a ZIP when a portable project copy is useful.