About PictureSizes.com

A free, privacy-first reference for every image dimension you'll ever need.

Our Mission

PictureSizes.com exists to solve one problem: finding accurate, up-to-date image dimensions shouldn't require clicking through ad-heavy listicles or outdated blog posts from 2018.

We built the reference we wish existed — fast, accurate, and updated monthly when platforms change their specs. No fluff, no sign-ups, no tracking.

What Makes Us Different

  • 100% Client-Side: All tools run in your browser using JavaScript. Images never leave your device. No server uploads, no data collection.
  • Always Current: Social media specs are updated monthly. Device resolutions added within days of new releases. We track Instagram, TikTok, YouTube, and every major platform.
  • No Ads, No Tracking: We don't use analytics, ad networks, or tracking cookies. LocalStorage stores only your theme preference (light/dark mode).
  • Open & Accessible: All content is free. No paywalls, no "pro" tiers, no email gates. Built with semantic HTML and WCAG accessibility standards.
  • Fast by Default: Lightweight vanilla JavaScript. No frameworks. No build step bloat. CSS variables for instant theme switching. Scores 100/100 on Lighthouse.

What We Cover

Calculators & Tools (11)

Aspect ratio calculator, DPI/PPI converter, pixel-to-cm/inch converters, image resizer, image compressor, color converter, CSS generator, responsive breakpoints, megapixel calculator, file size estimator.

Social Media Specs (13 platforms)

Instagram, Facebook, X (Twitter), YouTube, TikTok, LinkedIn, Pinterest, Threads, Snapchat, WhatsApp, Twitch, Shopify, Etsy. Every image type: profile photos, cover photos, feed posts, Stories, Reels, ads.

Device Resolutions (10+ categories)

iPhone (all models including iPhone 17 series), Samsung Galaxy, Google Pixel, iPad, MacBook, iMac, Apple Watch, monitors, TVs. Screen resolutions, PPI, aspect ratios, safe areas.

Print & Paper Sizes (6 standards)

ISO A-series (A0–A10), B-series, US paper (Letter, Legal, Tabloid), photo print sizes, billboard dimensions, business card specs. Includes pixels at 72/150/300 DPI.

Privacy Commitment

Your privacy is not negotiable. Here's exactly what we do and don't do:

  • Zero data collection: We don't log IP addresses, browser fingerprints, or usage analytics.
  • No third-party scripts: No Google Analytics, no Facebook Pixel, no ad networks.
  • LocalStorage only: We store your theme preference (light/dark mode) in your browser's LocalStorage. That's it.
  • Client-side processing: Image tools (resizer, compressor) use Canvas API — all processing happens in your browser. Images never touch our servers.
  • No cookies: We don't set tracking cookies. Session cookies are not used.

Read our full Privacy Policy →

Tech Stack

PictureSizes.com is built with modern web standards and zero-bloat philosophy:

  • HTML5: Semantic markup, ARIA labels, structured data (Schema.org) for SEO.
  • CSS: Custom properties (CSS variables) for theming. Zero preprocessors. No Tailwind, no Bootstrap. Hand-crafted responsive design.
  • JavaScript: Vanilla JS. No React, no Vue, no jQuery. Canvas API for image tools. Intersection Observer for scroll animations. Web APIs only.
  • Progressive Web App: Installable on mobile/desktop. Works offline (service worker caches static assets).
  • Performance: Scores 100/100 on Lighthouse (Performance, Accessibility, Best Practices, SEO). First Contentful Paint < 0.8s. Total page weight < 50KB gzipped.

Who Built This

PictureSizes.com was built by designers and developers frustrated by the lack of a reliable, ad-free image dimension reference. We're a small team maintaining this site as a public resource.

We don't monetize through ads or affiliate links. The site is supported by... well, nothing. It's just a labor of love (and mild obsession with typography and clean interfaces).

Get in Touch

Have a question? Found outdated specs? Want to suggest a new tool or platform?

  • Report outdated specs: Contact form →
  • Suggest new features: We track requests and prioritize based on demand.
  • Technical issues: Let us know if something's broken.

Changelog

February 2026: Added iPhone 17 series specs. Updated Instagram for new 3:4 grid format. Added Twitch emote specs. Refreshed all social media dimensions.

January 2026: Launched file size estimator tool. Added responsive breakpoint calculator. Updated TikTok and YouTube specs.

November 2025: Site launched with 11 tools, 50+ spec pages, and 5 visual comparison tools.