All Tools

Combine several photos into one image with grid layouts, adjustable spacing and corners, per-photo pan and zoom, then export to PNG, JPG, or WebP.

Test your hearing with pure tones at different frequencies. Get an audiogram showing your hearing thresholds for each ear.

Test your peripheral vision by detecting dots that appear around a central fixation point. Get a visual field map with detection rate and reaction-time stats.

Calculate CSS clamp() values for responsive typography that scales smoothly between viewport breakpoints, with presets and a live preview.

Magnify any spot by hovering your cursor. Upload an image or use the sample text, then adjust zoom up to 10x and switch the lens size and shape.

Listen to any text read aloud with word-by-word highlighting. Choose a voice, adjust speed and pitch, and follow along for a comfortable listening experience.

Test your visual acuity online with a Snellen-style eye chart. Calibrate your screen, test each eye, and get an instant vision score.

Cut a video to a chosen start and end point right in your browser, then export to MP4 or WebM. No upload needed.

Browse the most notable world events year by year from 1990 to today, with category filters, cross-year search and a source link to verify every event.

Reshape any text for comfortable reading: adjust font, size, spacing, and color theme, then add a reading ruler, focus mode, bionic reading, and auto-scroll.

Train your click accuracy and reaction time with interactive target practice. Choose from shrinking, speed, and precision modes.

Screen for color vision deficiencies with Ishihara-style dot plates. Read the hidden numbers across 10 plates to check your red-green and blue-yellow perception.