أدوات مجانية عبر الإنترنت
405+ free online tools for PDF, images, SEO, developers, color, and productivity. Fast, browser-based, and private — no signup, no installs, no limits. Search above or browse by category below.
Total tools405Available free tools
Categories15Active categories
Most usedCSV to ExcelPopular right now
Recently addedInterval Music RepeaterNewest tool
Instagram Chat Template Maker
Free Instagram chat template maker — design realistic DM mockups, customize conversations, save templates locally, and download PNG screenshots.
Typing Speed Practice
Free typing speed practice tool — type a short passage and see live WPM and accuracy. Restart anytime with easy or medium samples.
Fake Data Mock User Generator
Free fake data and mock user generator — create realistic names, emails, addresses, and custom fields. Export JSON, CSV, or SQL. Private, in your browser.
Diff Checker
Compare two texts and highlight added, removed, and changed lines or words instantly in your browser.
Gear Ratio Calculator
Calculate gear ratio, output RPM, and torque multiplier for spur gear trains. Single-stage, compound 2-stage, RPM solver, and tooth-count finder for target ratios. Enter driver and driven tooth counts — get speed reduction and ideal torque gain. Free, browser-based.
SSL Checker
Inspect TLS certificates for any public hostname — expiry, issuer, chain, cipher, and hostname match.
Speaker Tester
Free speaker tester: play test tones, check left/right channels, and verify volume in your browser. No signup.
UUID Generator
Generate RFC 4122 UUID v4 identifiers in bulk with optional uppercase and hyphen formatting.
HTML Formatter
Format and beautify HTML markup with indentation, readable tag breaks, and optional minification.
Restriction Enzyme Finder
Find restriction enzyme cut sites in DNA — EcoRI, BamHI, HindIII, and 30+ common enzymes with cut positions. Free, instant, browser-based.
Lab Timer
Countdown and stopwatch timer for lab work. Presets for 1, 5, 10, 15, 30, and 60 minute incubations. Lap times, audio alert on completion. Free, runs in your browser.
SEO Meta Generator
Generate SEO meta tags free: title, description, Open Graph, and Twitter cards with live Google and social previews. Copy-ready HTML, no signup.