Free Online Tools
370+ 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 tools37010.7K total uses
Categories15Active categories
Most usedJSON Formatter4.1K uses
Recently addedVS Code Extensions StoreNewest tool
Hinglish Caption Normalizer
Free Hinglish caption normalizer — tidy mixed Hindi-English social captions: spacing, emoji gaps, hashtag lines, and light casing fixes.
Used 0 times•Updated never
Story Reel Safe Zone Overlay
Free Instagram story/reel safe zone overlay — drop a 9:16 image and preview UI-safe margins for stickers, captions, and CTAs. Client-side only.
Used 0 times•Updated never
Before After Slider Maker
Free before/after image slider maker — upload two photos, drag the divider to compare, and download a still preview. Fully client-side.
Used 0 times•Updated never
Thin Content Risk Scanner
Free thin content risk scanner — paste page text and get a quick thin-content risk score with SEO checklist tips. Client-side only.
Used 0 times•Updated never
UTM Campaign Link Lab
Free UTM campaign link lab — build, preview, and parse UTM-tagged URLs for ads and campaigns. Fully client-side.
Used 0 times•Updated never
Raga Scale Practice Drone
Free raga scale practice drone — sustain Sa–Pa tanpura-style tones for Indian classical practice in the browser. No signup.
Used 0 times•Updated never
Meeting Cost Calculator
Free meeting cost calculator — estimate the real cost of meetings from attendees, hourly rates, and duration. Client-side only.
Used 0 times•Updated never
Audio Trimmer Cutter
Free online audio trimmer and cutter — cut, trim, and crop MP3, WAV, or M4A in your browser. No upload, no signup, private and instant.
Used 0 times•Updated never
Audio Converter
Free online audio converter — convert MP3, M4A, OGG, or FLAC to WAV in your browser. Change sample rate and channels privately with no upload or signup.
Used 0 times•Updated never
BPM Tap Detector
Free BPM tap detector — tap along to a song to find its tempo in beats per minute. Instant, private, and works offline in your browser with no signup.
Used 0 times•Updated never
Audio Volume Booster
Free online audio volume booster — amplify quiet MP3, WAV, or M4A files in your browser. Boost gain up to +20 dB privately with no upload or signup.
Used 0 times•Updated never
Guitar Chromatic Tuner
Free guitar chromatic tuner online — tune guitar, bass, or any instrument with your microphone. A440 reference, cents meter, private in your browser.
Used 0 times•Updated never