The privacy-first online toolkit.

Shrink a photo's file size with a quality slider and a live before/after preview — nothing ever uploads.

Pick a target size — the tool automatically searches for the highest quality that fits under it.

Set exact pixel dimensions or a percentage, lock the aspect ratio, and export instantly.

Drag a selection box over your image, snap to a common aspect ratio or go freeform, and export just that region.

Turn iPhone HEIC photos into universally-compatible JPG files, decoded and re-encoded entirely on your device.

Convert PNG images to JPG, choosing a background color to replace any transparency.

Convert JPG images to PNG for editing, layering, or destinations that require a lossless format.

Convert modern WebP images into universally-supported JPG files in one step.

Fix sideways photos or mirror an image with one click — rotation and flipping happen instantly on-device.

Turn one or many images into a single PDF, with drag-to-reorder pages before export.

Set a 50KB target and the tool automatically finds the highest quality that still fits under it.

Set a 100KB target and the tool automatically finds the highest quality that still fits under it — usually with room to spare on detail.

Restricted to JPG/JPEG input, pre-set to a strict 20KB target — the exact combination most exam and government portals ask for.

Pre-set to a strict passport-portal-style target so your photo meets typical size limits without guesswork.

Opens pre-set to exactly 600x600 pixels — the exact square dimension many passport-style and profile-photo requirements ask for.

See exactly how much interest and how many months you'll save by overpaying — with a chart comparing your original and overpaid payoff schedules.

Get the exact difference between two dates, or add/subtract days from a date, with correct handling of leap years, month lengths, and DST.

Switch between four common percentage calculations and get an instant, shareable answer.

Enter a loan amount, rate, and term to see your exact monthly payment and total interest instantly.

Enter your weight and height in either metric or imperial units to get your BMI and weight category instantly.

Enter a start and end date to get the exact number of days between them, broken down into weeks, months, years, and business days.

Enter a starting date and a number of days to add or subtract, and get the exact resulting calendar date.

Get the exact number of weekdays (Monday-Friday) between two dates, alongside the full calendar-day breakdown.

Enter a number of days and instantly see the exact resulting date, starting from today by default.

Enter an extra monthly payment amount and see exactly how much interest and time it saves versus your standard schedule.

See your exact payoff date and total remaining interest, and how much sooner you could be debt-free with extra payments.

Compare a biweekly half-payment schedule against your standard monthly payments — see the interest and time saved from making 26 half-payments a year instead of 12 full ones.