How do I install the Snaprender skill?

Run npx skillmds@latest add johnalbertini14-glitch/snaprender in your terminal (requires Node.js), paste this page's agent-chat prompt into Claude, Cursor, or any MCP-connected agent, or download the SKILL.md file and copy it into your agent's skills directory.

Is Snaprender safe to use?

This skill has not completed SkillMD's automated safety review yet. Independent scanners report: SkillSpector: PASS, Skill Scanner: WARNING. Capability flags: makes network calls, reads secrets. SkillMD never runs a skill's scripts for you; review the SKILL.md before installing.

Which AI agents work with Snaprender?

This skill is tagged as working with Claude Code, Claude.ai, OpenAI Codex. SKILL.md is an open format, so most agents that read a skills directory can load it too.

Is Snaprender free to use?

Yes. Installing skills from SkillMD is free, and the skill stays under its author's original license.

Who published Snaprender?

johnalbertini14-glitch (@johnalbertini14-glitch) published this skill. Their other Agent Skills are listed on their SkillMD profile.

Snaprender by johnalbertini14-glitch

Name: Snaprender
Rating: 4.2 (5 reviews)
Author: johnalbertini14-glitch

Snaprender

Give your agent eyes on the web — screenshot any URL as an image file. Supports device emulation (iPhone, iPad, Pixel, MacBook), dark mode, full-page scroll, ad blocking. Uses exec tool with curl (NEVER the browser tool). $SNAPRENDER_API_KEY is pre-set. See instructions below.

File contents

SnapRender — Give Your Agent Eyes

Your agent can read the web but can't see it. One command and it captures pixel-perfect screenshots — any site, any device, in seconds.

"Screenshot stripe.com on iPhone", "Compare desktop vs mobile", "Full-page dark mode capture" — just ask.

Free tier: 50 screenshots/month, no credit card. Get a key →

IMPORTANT: Use the exec tool with curl. NEVER use the browser tool for screenshots.

How to Capture

Run this command via the exec tool. Replace ENCODED_URL with the URL-encoded target (e.g. https%3A%2F%2Fstripe.com):

curl -s "https://app.snap-render.com/v1/screenshot?url=ENCODED_URL&response_type=json&format=jpeg&quality=60&block_ads=true&block_cookie_banners=true" \
  -H "X-API-Key: $SNAPRENDER_API_KEY" \
  | tee /tmp/snap_response.json \
  | jq -r '.image' | sed 's|data:image/[^;]*;base64,||' | base64 -d > /tmp/screenshot.jpg \
  && jq '{url, format, size, cache, responseTime, remainingCredits}' /tmp/snap_response.json

This saves the screenshot to /tmp/screenshot.jpg and prints metadata.

Rules

Use exec tool only — NEVER the browser tool
$SNAPRENDER_API_KEY is already set — use it literally in the command, do NOT replace it
URL-encode the target — https://stripe.com → https%3A%2F%2Fstripe.com
Always use format=jpeg&quality=60 — keeps response small enough for the agent context
Always pipe to save the image to a file — the base64 response is too large to display inline
Report metadata to the user — file size, response time, cache status, remaining credits

Parameters

Add as query parameters to the URL:

Parameter	Values	Default
url	URL-encoded target	required
response_type	json	json (always use this)
format	jpeg, png, webp	jpeg
quality	1-100	60
device	iphone_15_pro, pixel_7, ipad_pro, macbook_pro	desktop
dark_mode	true, false	false
full_page	true, false	false
block_ads	true, false	true
block_cookie_banners	true, false	true
width	320-3840	1280
height	200-10000	800
delay	0-10000	0 (ms wait after page load)

Examples

Desktop screenshot of stripe.com:

curl -s "https://app.snap-render.com/v1/screenshot?url=https%3A%2F%2Fstripe.com&response_type=json&format=jpeg&quality=60&block_ads=true&block_cookie_banners=true" -H "X-API-Key: $SNAPRENDER_API_KEY" | tee /tmp/snap_response.json | jq -r '.image' | sed 's|data:image/[^;]*;base64,||' | base64 -d > /tmp/screenshot.jpg && jq '{url, format, size, cache, responseTime, remainingCredits}' /tmp/snap_response.json

Mobile screenshot: add &device=iphone_15_pro to the URL

Full scrollable page: add &full_page=true to the URL

Dark mode: add &dark_mode=true to the URL

Compare desktop vs mobile: make two calls, save to /tmp/screenshot_desktop.jpg and /tmp/screenshot_mobile.jpg

After Capturing

Tell the user the screenshot was saved to /tmp/screenshot.jpg (or the filename you used)
Report metadata: file size, response time, cache status, remaining credits
For comparisons, save each screenshot to a different filename

Errors

401: Invalid API key — check SNAPRENDER_API_KEY
429: Rate limit or quota exceeded — wait or upgrade plan
Timeout: Target site is slow — add &delay=3000 to wait longer
Empty response: URL unreachable or blocked

Get an API Key

Free at https://app.snap-render.com/auth/signup — 50 screenshots/month, no credit card.

---name: snaprenderdescription: Give your agent eyes on the web — screenshot any URL as an image file. Supports device emulation (iPhone, iPad, Pixel, MacBook), dark mode, full-page scroll, ad blocking. Uses exec tool with curl (NEVER the browser tool). $SNAPRENDER_API_KEY is pre-set. See instructions below.---# SnapRender — Give Your Agent EyesYour agent can read the web but can't *see* it. One command and it captures pixel-perfect screenshots — any site, any device, in seconds."Screenshot stripe.com on iPhone", "Compare desktop vs mobile", "Full-page dark mode capture" — just ask.Free tier: 50 screenshots/month, no credit card. [Get a key →](https://app.snap-render.com/auth/signup)---**IMPORTANT: Use the `exec` tool with `curl`. NEVER use the `browser` tool for screenshots.**## How to CaptureRun this command via the `exec` tool. Replace `ENCODED_URL` with the URL-encoded target (e.g. `https%3A%2F%2Fstripe.com`):```bashcurl -s "https://app.snap-render.com/v1/screenshot?url=ENCODED_URL&response_type=json&format=jpeg&quality=60&block_ads=true&block_cookie_banners=true" \ -H "X-API-Key: $SNAPRENDER_API_KEY" \ | tee /tmp/snap_response.json \ | jq -r '.image' | sed 's|data:image/[^;]*;base64,||' | base64 -d > /tmp/screenshot.jpg \ && jq '{url, format, size, cache, responseTime, remainingCredits}' /tmp/snap_response.json```This saves the screenshot to `/tmp/screenshot.jpg` and prints metadata.## Rules1. **Use `exec` tool only** — NEVER the `browser` tool2. **`$SNAPRENDER_API_KEY` is already set** — use it literally in the command, do NOT replace it3. **URL-encode the target** — `https://stripe.com` → `https%3A%2F%2Fstripe.com`4. **Always use `format=jpeg&quality=60`** — keeps response small enough for the agent context5. **Always pipe to save the image to a file** — the base64 response is too large to display inline6. **Report metadata to the user** — file size, response time, cache status, remaining credits## ParametersAdd as query parameters to the URL:| Parameter | Values | Default ||-----------|--------|---------|| url | URL-encoded target | required || response_type | json | json (always use this) || format | jpeg, png, webp | jpeg || quality | 1-100 | 60 || device | iphone_15_pro, pixel_7, ipad_pro, macbook_pro | desktop || dark_mode | true, false | false || full_page | true, false | false || block_ads | true, false | true || block_cookie_banners | true, false | true || width | 320-3840 | 1280 || height | 200-10000 | 800 || delay | 0-10000 | 0 (ms wait after page load) |## Examples**Desktop screenshot of stripe.com:**```bashcurl -s "https://app.snap-render.com/v1/screenshot?url=https%3A%2F%2Fstripe.com&response_type=json&format=jpeg&quality=60&block_ads=true&block_cookie_banners=true" -H "X-API-Key: $SNAPRENDER_API_KEY" | tee /tmp/snap_response.json | jq -r '.image' | sed 's|data:image/[^;]*;base64,||' | base64 -d > /tmp/screenshot.jpg && jq '{url, format, size, cache, responseTime, remainingCredits}' /tmp/snap_response.json```**Mobile screenshot:** add `&device=iphone_15_pro` to the URL**Full scrollable page:** add `&full_page=true` to the URL**Dark mode:** add `&dark_mode=true` to the URL**Compare desktop vs mobile:** make two calls, save to `/tmp/screenshot_desktop.jpg` and `/tmp/screenshot_mobile.jpg`## After Capturing1. Tell the user the screenshot was saved to `/tmp/screenshot.jpg` (or the filename you used)2. Report metadata: file size, response time, cache status, remaining credits3. For comparisons, save each screenshot to a different filename## Errors- **401**: Invalid API key — check SNAPRENDER_API_KEY- **429**: Rate limit or quota exceeded — wait or upgrade plan- **Timeout**: Target site is slow — add `&delay=3000` to wait longer- **Empty response**: URL unreachable or blocked## Get an API KeyFree at https://app.snap-render.com/auth/signup — 50 screenshots/month, no credit card.

Frequently asked questions