UtilityKit

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Page Screenshot Service

Capture full-page or viewport screenshots of any public URL as PNG or JPG using real browser rendering.

About Page Screenshot Service

Page Screenshot Service lets you capture screenshots of any public webpage using a real headless browser on the server. Choose from three device presets — Desktop (1280×800), Tablet (768×1024), or Mobile (375×812) — to see exactly how a page renders at each breakpoint. Toggle full-page capture to grab the entire scrollable content or keep it off for a viewport-only shot. Pick PNG for lossless quality or JPG for smaller file sizes. The service uses Playwright (with a Puppeteer fallback) so JavaScript-heavy pages render correctly. Results are shown as a live preview in the browser and can be downloaded directly. Useful for visual regression checks, client reports, social media previews, and archiving page states.

Why use Page Screenshot Service

Real browser rendering means JavaScript

Real browser rendering means JavaScript, fonts, and CSS all execute — no blank or broken pages.

Three device presets let

Three device presets let you test mobile, tablet, and desktop layouts in one tool.

Full-page capture grabs content

Full-page capture grabs content below the fold that viewport screenshots miss.

PNG and JPG format

PNG and JPG format choice balances quality versus file size for your use case.

Private IP blocking prevents

Private IP blocking prevents misuse for internal network reconnaissance.

No software install

No software install — capture any page in seconds from any device.

How to use Page Screenshot Service

  1. Enter the full URL of the page you want to screenshot (must start with https:// or http://).
  2. Click a device preset chip — Desktop, Tablet, or Mobile — to set the viewport dimensions.
  3. Toggle 'Full page' on to capture the entire scrollable page, or leave it off for viewport only.
  4. Choose PNG for lossless quality or JPG for a smaller file.
  5. Click Screenshot. A spinner indicates the capture is in progress (usually 5-10 seconds).
  6. Preview the screenshot inline, then click Download to save it to your device.
  7. Enter the full URL of the page you want to screenshot — must start with https:// or http://.

When to use Page Screenshot Service

  • Checking how a webpage looks on mobile without opening DevTools.
  • Generating screenshots for client presentations or bug reports.
  • Archiving the visual state of a page before making changes.
  • Testing OG/social preview images by seeing what a crawler would render.
  • Creating thumbnails or preview images for documentation.
  • Checking how a webpage looks on mobile without opening DevTools and toggling responsive mode

Examples

Desktop full-page screenshot

Input: URL: https://www.example.com Device: Desktop (1280×800) Full page: ON Format: PNG

Output: PNG file approximately 1280px wide by full document height (e.g. 4200px tall), showing the page from top to footer with all CSS rendered.

Mobile viewport-only screenshot

Input: URL: https://news.ycombinator.com Device: Mobile (375×812) Full page: OFF Format: JPG

Output: JPG file 375×812 px showing the mobile layout at the top of the page, ideal for sharing in chat as a quick visual reference.

OG preview check

Input: URL: https://blog.example.com/post-slug Device: Desktop (1280×800) Full page: OFF Format: PNG

Output: 1280×800 PNG showing the page hero, used to verify what social-media crawlers (Twitter, Facebook, LinkedIn) approximate when generating link previews.

Tips

  • Use the Mobile preset (375×812 — iPhone 13 Pro size) when checking responsive layouts, not the Tablet preset.
  • Full-page mode triggers a virtual scroll to ensure lazy-loaded images and infinite-scroll first-batch content render.
  • JPG at default quality is fine for most screenshots; switch to PNG only when you need pixel-perfect text rendering.
  • If the page has cookie banners, the screenshot will include them — there is no way to dismiss interactive prompts.
  • Pages with auth walls return the login screen since the headless browser has no session cookies.
  • For viewport-only shots, content below the fold is not captured — toggle full-page on for marketing pages and blogs.
  • Repeated captures of the same URL may take longer if the site has weak caching or many third-party scripts.

Frequently Asked Questions

Which rendering engine does this use?▾
The server uses Playwright with Chromium as the primary renderer. If Playwright is unavailable, it automatically falls back to Puppeteer (also Chromium-based).
How long does a screenshot take?▾
Typically 5-15 seconds depending on page complexity and network speed. The tool waits for 'networkidle' so ads, fonts, and lazy-loaded images have time to render.
Can I screenshot a page that requires login?▾
No — the headless browser opens the page without any cookies or session state. Only publicly accessible pages can be captured.
What is the maximum viewport size?▾
Width is capped at 2560px and height at 4096px for safety. The three device presets cover the most common use cases.
Does full-page capture work on infinite scroll pages?▾
It captures content that is rendered on initial load and networkidle. Infinite scroll content that requires user interaction will not be included.
Can I screenshot localhost or private IP pages?▾
No — private IP ranges and localhost are blocked to prevent SSRF attacks. Only publicly routable URLs are accepted.

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Glossary

Headless Chromium
Google Chrome's rendering engine running without a visible UI window, used here on the server to render pages and capture pixels programmatically.
Playwright
Microsoft's browser automation library that drives Chromium, Firefox, and WebKit headlessly with a unified API; the primary engine for this tool.
Puppeteer
Google's earlier browser automation library, also driving headless Chromium; used as a fallback when Playwright is unavailable.
Viewport
The visible browser window dimensions in CSS pixels; the screenshot's width and height when full-page mode is off.
Full-page capture
A screenshot of the entire scrollable page from top to bottom, achieved by virtually scrolling and stitching slices together.
networkidle
A Playwright/Puppeteer wait condition that resolves when there have been no network connections for 500 ms — ensures async content finishes loading before capture.
PNG (Portable Network Graphics)
A lossless raster format ideal for screenshots with sharp text, UI elements, and solid colours; larger files than JPG.
JPG (JPEG)
A lossy raster format that compresses photos and gradients efficiently but introduces artifacts in text-heavy screenshots.
Device pixel ratio (DPR)
The ratio of physical to CSS pixels — Retina displays have DPR 2 or 3. The default capture uses DPR 1 unless otherwise configured.