OnlineAITool
Free · No sign-up · Nothing uploaded

Tools that hit the exact size your form demands

Compress an image to 20 KB. Resize a signature to 140 × 60 pixels. Get a visa photo under 240 KB. Shrink a PDF to 200 KB. 231 tools, each targeting a real specification — and every one runs inside your browser, so your files never leave your device.

Image Tools

44 tools

Compress and resize images to an exact file size or pixel specification.

See all 44 image tools →

PDF Tools

35 tools

Compress PDFs to a target size, and merge, split, rotate or reorder pages.

See all 35 pdf tools →

Exam & Forms

51 tools

Photo and signature presets for exam and government application forms.

See all 51 exam & forms →

Platform Specs

30 tools

One-click presets for visa, marketplace and social media upload requirements.

See all 30 platform specs →

Calculators

50 tools

Finance, tax, health and everyday calculators that show their working.

See all 50 calculators →

Text Tools

6 tools

Count, convert and clean up text, live as you type.

See all 6 text tools →

Developer Tools

5 tools

JSON, Base64 and URL utilities that run locally — your data never leaves the page.

See all 5 developer tools →

SEO & Generators

5 tools

Meta tags, robots.txt, sitemaps, QR codes and secure passwords.

See all 5 seo & generators →

AI & Metadata

3 tools

Read what is actually inside an image file — AI generation data, camera EXIF, GPS.

See all 3 ai & metadata →

YouTube Tools

2 tools

Thumbnail URLs and previews for any YouTube video.

See all 2 youtube tools →

Why these tools are different

They target a specification, not a vague "smaller"

Most compressors give you a quality slider and leave you guessing. These start from the requirement — 20 KB, 200 × 230 pixels, under 1 MB — and search for the highest quality that still fits. You get a file that passes the form, with as much detail as the limit allows.

Nothing is uploaded

Processing runs on your own device. There is no server handling your files, which means no upload wait, no storage, no privacy question, and no usage cap. You can confirm it: open your browser's Network tab and watch that nothing is sent.

Specifications are dated and sourced

Exam boards and governments revise upload rules regularly, and most tool sites copy stale numbers from each other. Every specification page here shows where the figure came from and when we last checked it. Where we could not verify something, the page says so rather than presenting a guess as fact.

Honest about limits

PDF compression to a hard size target requires rasterising the document, which stops the text being selectable. We say that above the tool rather than hiding it, because for a résumé being read by an applicant tracking system it genuinely matters.

Guides

Why Your Exam Form Photo Keeps Getting RejectedEight reasons Indian recruitment portals reject a photo or signature, and how to fix each … Image Size Requirements for Every Major PlatformThe exact pixel dimensions and file size limits for Amazon, Etsy, eBay, Shopify, YouTube, … How to Compress an Image to an Exact File SizeWhy most compressors overshoot or undershoot your target, and the binary search method tha… How to Compress a PDF Without Ruining ItWhy PDF compression is a genuine trade-off, what it costs you, and when you should fix the… Résumé File Size: What Applicant Tracking Systems Actually AcceptThe real limits, why an oversized résumé fails silently, and the fix that does not break t… Photo and Signature Sizes for Every Major Indian ExamA single reference table of photo and signature requirements across SSC, IBPS, SBI, NTA an… How to Compress an Image to Any Size: The Complete GuideEvery size target from 10 KB to 2 MB, which one you actually need, and how to reach it wit… Every PDF Tool You Need, and When to Use EachWhich PDF operations are lossless, which permanently change your document, and how to pick… Visa and Passport Photo Sizes: A Country-by-Country GuideExact photo specifications for the US, UK, Schengen, Canada, Australia, UAE, India, Japan,… Free SEO Tools: Meta Tags, Robots.txt, Sitemaps and QR CodesWhat each file actually does, the mistakes that cost traffic, and tools that generate them… Text and Developer Tools That Never Upload Your DataWhy it matters that JSON formatters and text tools run locally, and what each of these act… Loan, Mortgage and Investment Calculators ExplainedWhat EMI actually means, why early payments are almost all interest, and which figure to c…