Outils gratuits d'image, de calcul et PDF

Enhance depth and perspective with spatial image effects.

Fine-tune colors and edit palettes with precise controls.

Match colors to their closest names and color codes.

Compress JPG, PNG, WebP, and AVIF while keeping the original format.

Add text or logo watermarks to images in a few clicks.

Resize images accurately by pixels, ratio, or target dimensions.

Crop only the area you need and save a clean new image.

Rotate or flip images to fix their orientation fast.

Turn photos into adjustable pixel art and download the result as PNG.

Hide secret text in image pixels or extract it again.

Turn photos into seven grayscale art styles including pencil, charcoal, woodcut, and halftone.

Turn photos into 11 distinct color NPR styles including cel shading, anime, webtoon, and rotoscoping.

Arrange multiple images into a single collage layout.

Join multiple images into one combined output.

Write eight characters and create local TTF and WOFF2 Hangul fonts.

Analyze image text locally and compare similar hosted and system fonts.

Extract Korean and English from images. Copy text or save as TXT.

Extract key colors from an image and organize them into a palette.

Use AI to colorize black-and-white or flat images naturally.

Upscale low-resolution images with sharper AI enhancement.

Clear hazy, misty, or washed-out images with AI.

Reduce grain and color noise with AI cleanup.

Reduce rain streaks and wet artifacts in photos.

Lift brightness and hidden detail in dark photos.

Retouch tone, contrast, and detail naturally with AI.

Paint over unwanted areas and let AI inpainting cleanly fill them.

Quickly remove backgrounds from product shots and profile photos.

Detect faces in photos and blur them automatically.

Smart Resize retargets image proportions while preserving the main subject.

Generate AI icon and symbol concepts for apps and brands.

Analyze text and create AI word cloud visuals.

Classify image content locally with on-device AI.

Check which local AI models fit your GPU and memory, including OOM risk.

Experience a smart AI vision chat that runs safely in your browser without uploading anything to a server.

Turn images into text-based ASCII art.

Generate website favicons in multiple required sizes.

Convert images into the format you need with ease.

Create QR codes or read them from images, paste, and camera.

Generate barcodes in multiple common formats.

Capture HTML content and save it as an image.

Export SVG files as transparent PNG or WebP images at any size.

Build iOS, Android, and PWA icon packages from one image.

Render Mermaid syntax as sequence, flowchart, and other diagrams.

Convert PNG images into ICO icon files.

Convert bitmap images into SVG vector graphics.

Convert selected PDF pages into high-resolution PNG or JPG images.

Preview, reorder, rotate, remove, and extract PDF pages locally.

Turn multiple images into one PDF with custom paper size and margins.

Add text or image watermarks to all or selected PDF pages.

Add customizable page numbers to a PDF in your browser.

Add a drawn signature, image signature, or round stamp to a PDF.

Crop top, right, bottom, and left PDF margins in millimeters.

Edit PDF title, author, subject, keywords, and language.

Extract PDF text by page, copy it, or save it as TXT.

Compare two PDFs by text relationships and rendered visual differences.

Inspect PDF metadata, internal objects, fonts, and images.

Merge multiple PDFs in your preferred order without server uploads.

Read and inspect EXIF metadata from image files.

Inspect PNG structure and chunk-level details.

Analyze image structure, pixels, and metadata together.

Estimate a Korean residential electricity bill with progressive rates.

Calculate supply value, 10% VAT, and total in either direction.

Convert square meters, pyeong, or width and height.

Calculate target dates, date ranges, and anniversary milestones.

Compare additive light and subtractive pigment mixing with color-code results.

Calculate arithmetic, trigonometry, logarithms, powers, and factorials.

Calculate percentages, ratios, changes, and discounts.

Calculate image ratios and matching resize dimensions.

Convert pixels, DPI, centimeters, inches, and print sizes.

Compare monthly payments, total interest, and loan schedules.

Calculate deposit interest and after-tax maturity value.

Calculate recurring savings interest and maturity value.

Compare Korean age systems and find lunar birthdays and major milestones.

Convert length, mass, volume, speed, data, and temperature.

Estimate 2026 Korean deductions and take-home salary.

Estimate Korean severance pay from service and average wages.

Estimate pay and Korean paid weekly holiday allowance.

Estimate compound returns and future value from initial and monthly investments.

Estimate video size from bitrate or find bitrate for a target file size.

Estimate fuel required and trip cost from distance, efficiency, and price.

Estimate Korean statutory annual leave and remaining days.

Estimate Korean overtime, night, and holiday work pay.

Estimate 2026 Korean unemployment benefit amount and duration.

Estimate Korean parental-leave benefits by month.

Calculate Korean freelancer 3.3% withholding and net payment.

Estimate Korean comprehensive income tax.

Estimate Korean home acquisition tax.

Estimate Korean real-estate capital gains tax.

Estimate Korean inheritance and gift tax.

Estimate the maximum Korean home brokerage fee.

Estimate Korean passenger-car tax from engine size and age.

Check color contrast ratios and WCAG AA or AAA compliance.

Find a selling price from cost, fees, and target margin.

Estimate transfer time from file size and network speed.

Calculate shipment dimensional and chargeable weight.

Estimate EV energy use and charging cost.

Estimate monthly rent after changing a Korean lease deposit.

Compare mortgage limits under entered DSR and LTV assumptions.

Estimate a Korean year-end tax refund or payment.

Make a simple Korean national pension estimate.

Estimate monthly card installments and total interest.

Calculate BMI and a normal-BMI weight range.

Estimate BMR and daily maintenance calories.

Convert GPA among common grading scales.

Estimate gestational age and due date.

Convert dog or cat age to a human-age equivalent.

Find a zodiac sign from a birthday with original artwork and common traits.