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Remove unwanted characters, lines, and whitespace.
Switch between uppercase, lowercase, title case, and more.
Sort, reverse, shuffle, and manipulate lines.
Search and replace text, extract emails, URLs, numbers.
Count words, characters, lines, sentences, and analyze text.
Reverse, repeat, and stylize text.
Encode and decode text — Base64, URL, HTML entities, hashes.
Generate Lorem Ipsum, passwords, random numbers, slugs, and more.
JSON formatter, JWT decoder, HTML editor, CSV ↔ JSON, diff, Markdown.
Age, BMI, loan, percentage calculators and unit converters — all in your browser.
Resize, compress, crop, convert, and transform images — all in your browser.
Merge, split, rotate, and convert PDFs — all in your browser, no upload.
Filter, sort, dedupe, and analyze CSV data — all in your browser.
Word, Excel, and PowerPoint conversions — DOCX, XLSX, PPTX — all in your browser.
Generate iOS / Android / Play Store icons, wallpapers, screenshots, and social-share images from one source image.
Trim, fade, normalize audio files entirely in your browser via the Web Audio API.
Compress, trim, mute, convert, and stamp watermark on video files entirely in your browser.
Convert between units of length, area, volume, weight, speed, and more — instant results in your browser.
DNS lookup, WHOIS, ping, HTTP headers, SSL checker, and IP tools.
Concrete, brick, paint, roofing, lumber, and flooring calculators for builders and contractors.
Calculate Ohm's law, electricity cost, single and three phase power, and battery run time.
Statistical analyzer, frequency distribution, editable data tables — data exploration in your browser.
Instagram profile downloader, social media link analyzer, and media URL extractor tools.
Test, debug, and document APIs
SQL formatting, schema design, and query tools
Docker, Kubernetes, CI/CD, and infrastructure tools
WCAG compliance, contrast checking, and ARIA tools
CSP, security headers, and privacy compliance tools
Convert, format, and generate Markdown content
Test, debug, visualize, and generate regular expressions
Fun browser-based games — dice, cards, memory, and arcade games.
2 posts tagged with "education"
Browser-based kids' games are safer than app store alternatives — no data collection, no ads tracking kids, no in-app purchases. Here's how interactive play builds real skills.
How to use 1Stop Tools for a complete study workflow: Markdown notes → organized PDF textbook with bookmarks, flashcards for review, and quizzes for self-testing. All free, all in your browser.
Most shortcuts ignore when you're typing in a text field.