Free online tools
Image & Media
Explore 19 Image & Media tools and finish common tasks quickly in your browser.
Image Compressor
Compress JPG, PNG, and WebP images online in batch. Adjust quality slider, resize max width, or convert to WebP/JPEG. 100% client-side in your browser with zero uploads.
Audio Trimmer & Fade In / Out
Trim audio locally, adjust fades and volume, select a waveform range and preview before exporting WAV. Channels are preserved; audio is not uploaded.
SRT & VTT Subtitle Editor and Time Shifter
Edit plain-text SRT and VTT subtitles locally, shift all timings, convert formats or export text, and optionally preview a local video. Files are not uploaded.
Browser FPS & WebGL Smoothness Test
Measure browser animation smoothness with a fixed WebGL 3D scene. See average FPS, frame intervals and long frames, with results calculated locally and no installation.
Headphone & Speaker Left Right Test
Test left, right and both audio channels or alternate sides to identify headphone and speaker orientation. No microphone required; audio is generated locally.
Mouse Button, CPS & Double Click Test
Test mouse buttons, scroll wheel, click speed and double-click intervals with browser movement event estimates. All processing stays local.
Dead Pixel, Backlight Bleed & Screen Color Test
Check dead pixels, backlight bleed, grayscale, gradients and display uniformity in fullscreen with custom colors and automatic playback.
Audio & Waveform Generator (with Metronome & Tuner)
Generate various audio waveforms, adjust frequency (Hz), metronome, and display visual oscilloscope animation.
Image Resizer & Converter
Resize and convert images (PNG/JPG/WebP) locally inside your browser.
EXIF Viewer & Purger
Inspect image EXIF/GPS metadata and strip private information locally for safe download.
QR Code Generator & Decoder
Generate QR Codes (with custom colors/logo) and decode QR Code images offline in your browser.
Image Pixel Art & Lego Maker
Convert any photo into pixel art instantly! Supports Hama Beads and Lego building block mosaic grid modes, counts color brick distribution, and exports PNG/SVG.
Web Text-to-Speech (TTS) Reader
Read text aloud with your browser's built-in Web Speech API. Pick a voice, adjust speed, pitch and volume; long text is split into chunks automatically.
Online Webcam Test, Camera Preview & Snapshot
Test your webcam, resolution, frame rate and camera switching with mirror preview, composition grid and private local snapshots.
Online Microphone Test & Live Waveform
Test microphone input, live volume, peak level, clipping and waveform with a private 30-second local recorder. Audio never leaves your device.
Instagram Caption Grid Splitter & Cropper
Split a single image locally into 3x3, 3x1, or 3x2 grid layouts with preview order numbers and download instantly as a ZIP file.
Secure Local Image Watermark Adder
Add text or logo watermarks to your product photos or identity cards 100% locally. Support grid tiling, opacity, and rotation with zero upload.
Online Screen Recorder & Video Trimmer
Record your screen, a window or a browser tab with microphone and tab audio, entirely in your browser. Trim a clip and download it as WebM (MP4 in Safari).
Lo-Fi Rain Piano & Focus Music Box
Synthesize gentle Lo-Fi piano chords locally using Web Audio API, featuring canvas rain drops hitting virtual piano keys.
