Free, fast and private tools for students and teachers
Merge and convert PDFs, resize and compress images, count words, calculate grades and more — all free. Everything runs in your browser, so your files never leave your device.
PDF tools
PDF Merger
Combine multiple PDF files into a single document instantly without uploading to any server.
Open Tool →Split PDF
Extract, delete, reorder or split pages from a PDF — handy for handouts and submissions.
Open Tool →Image to PDF
Convert JPG, PNG, and WebP images into a compiled PDF with customizable margins and sizes.
Open Tool →Rotate PDF
Rotate sideways PDF pages and save the corrected file.
Open Tool →PDF Compressor
Shrink large PDF files so they fit upload limits on assignment portals and email.
Open Tool →PDF to JPG
Turn PDF pages into JPG, PNG, or WebP images, privately in your browser.
Open Tool →Watermark PDF
Stamp DRAFT, CONFIDENTIAL, or a logo across every PDF page, privately.
Open Tool →Extract PDF Text
Copy or download all the selectable text from any PDF, privately.
Open Tool →Image tools
Image Resizer
Resize photos to exact pixels or a percentage to meet upload limits.
Open Tool →Image Compressor
Compress JPG, PNG and WebP images down to a target file size.
Open Tool →Image Converter
Convert images between PNG, JPG and WebP in seconds.
Open Tool →Avatar Creator
Crop and resize any photo into a clean profile picture for school portals and apps.
Open Tool →HEIC to JPG
Convert iPhone HEIC photos to shareable JPG or PNG, privately in-browser.
Open Tool →Crop Image
Crop photos to passport, ID, or aspect-ratio presets at full quality.
Open Tool →Remove EXIF
View and strip hidden GPS and camera metadata from photos before sharing.
Open Tool →Text tools
Word Counter
Analyze word counts, characters, and estimate reading time dynamically.
Open Tool →Case Converter
Fix capitalisation and clean up messy text for essays and worksheets.
Open Tool →Readability
Score any text for reading ease and grade level as you type.
Open Tool →Text Compare
Spot every added, removed, and changed line between two texts.
Open Tool →Study tools
GPA Calculator
Calculate your semester GPA instantly. Save time tracking your grades and credits.
Open Tool →QR Code
Generate high-quality QR codes from any URL or text. Perfect for handouts and presentations.
Open Tool →Grade Calculator
Compute your weighted course grade from assignments and exams instantly.
Open Tool →Final Grade
Find the exact final-exam score you need to hit your goal grade.
Open Tool →Exam Odds
See the odds a topic you studied comes up in the exam draw (oposiciones-style).
Open Tool →Why Use schools.app?
100% Private
Everything processes directly in your browser. Files never touch our servers.
Instant
No uploads or downloads to wait for — results appear right away on your device.
Completely Free
No paywalls, no subscriptions and no ads.
Frequently Asked Questions
Are my files uploaded to your servers?
No. Every single tool on schools.app runs 100% locally in your web browser. Your files never leave your device, ensuring total privacy.
Do I need an account to use the tools?
Absolutely not. We believe in frictionless utilities. There are no sign-ups, no logins, and no paywalls.
Can I use this on my mobile phone?
Yes! The entire application is fully responsive and works beautifully on phones, tablets, and desktop computers.