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Capture the entire rendered page as soon as you find it, then preserve the original file and its context. Use Firefox’s “Take a screenshot of the entire page” control or Chromium DevTools’ “Capture full size screenshot” command. Save the unedited PNG, and when practical also save a PDF or page export. Record the complete URL, redirects, UTC time, browser and operating-system versions, viewport, login state, network context and operator. A screenshot documents what one session displayed; it does not, by itself, prove who operated the domain, that a balance was real or that money moved. Pair it with transaction records, blockchain data, communications, saved-page material and a custody log before reporting to IC3 or another authority.
What should you do first when you find a suspected crypto scam website?
Preserve the page before clicking through it or warning the operator. Write down the computer and browser you are using, the exact UTC time (including how your time source was checked), the network context, and whether you are logged in. Use a clean browser profile if possible, and do not install an extension, wallet, application or remote-access tool promoted by the site.
Keep the original capture untouched. If you need to highlight a wallet address or redact personal information, make a working copy and leave the original in restricted or read-only storage. Your notes should identify the software and settings used, every file created, errors or failed loads, and each person who handled the evidence.
How do you capture an entire page in Firefox?
Mozilla’s current Firefox procedure uses a built-in Developer Tools button. The label can move between releases, so confirm it in the version installed on the evidence computer.
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- Open the suspected page in Firefox. Do not close the tab after the capture; it may be needed to verify redirects or dynamic behavior.
- Open Developer Tools (press
F12or use the browser’s Developer Tools menu). - Open the Developer Tools options menu and choose Available Toolbox Buttons.
- Enable Take a screenshot of the entire page.
- Click the camera or screenshot button that appears in the toolbox. Firefox saves the image to the Downloads folder.
- Immediately rename the file with a case identifier and UTC timestamp, then copy it to your restricted evidence location.
Firefox’s full-page image represents the document Firefox rendered. Inspect it for missing sections, blank frames, clipped content, unloaded images and overlays before you close the page.
How do you capture a full-size page in Chromium-based browsers?
Chrome and other Chromium browsers expose a DevTools command named Capture full size screenshot. Exact menus vary by installed version, so verify the command name on the computer you are documenting.
- Open the page and wait until the visible content settles. Note any pop-ups, redirects or error messages.
- Open DevTools with
F12or the browser menu. - Open the DevTools command menu (usually
Ctrl+Shift+Pon Windows/Linux orCommand+Shift+Pon macOS). - Search for Capture full size screenshot and run it.
- Save the resulting image without editing it. Record the browser version, viewport, device emulation or device-pixel-ratio settings, and the download filename.
If the command captures only the visible viewport, you selected a viewport-only command or the page was not treated as a scrollable document. Recheck the command name, disable unusual device emulation, and repeat the capture while documenting the change.
Which pages and details should be captured?
A landing page alone rarely tells the whole story. Capture every relevant state in the path a victim would follow, while recording what you did between captures.
Capture the complete user flow
- Landing and promotional pages, including the advertisement, social post or referral message that led to the domain.
- Sign-in, registration, dashboard and any displayed account balance or profit. Label displayed figures as claims made by the site.
- Deposit instructions, wallet-selection screens, requested fees or taxes, withdrawal screens and “unlock” messages.
- Support chat, contact pages, terms, privacy notices and other pages that identify an operator or payment recipient.
- Pop-ups, bot checks, consent dialogs, failed loads and redirects. If content appears only after scrolling or a delay, capture the settled state again.
Record the address and transaction context
Make a separate capture or log entry that shows the complete address-bar URL, including scheme, subdomain, path and query string. Record every redirect and look-alike spelling. For the financial record, preserve the wallet address, requested amount and asset, transaction hash, exchange used, date and time, communication channel and the timeline of contact.
Preserve original emails, text messages, social posts, phone numbers, usernames and application names where exports are available. A screenshot of a message is useful context, but an original export can retain metadata that an image does not.
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How do you preserve a screenshot so another person can verify it?
Save the original file immediately, then create a hash and an evidence-log entry. A hash helps you show that the file you later provide is the same byte-for-byte file you first stored; it does not prove that the web page itself was truthful.
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- Compute a cryptographic hash such as SHA-256 with a trusted local utility. On systems that provide them,
sha256sum filename.pngor PowerShell’sGet-FileHash filename.png -Algorithm SHA256produce a record you can place in the log. - Record the filename, hash, byte size, UTC acquisition time, page URL, browser and operating-system versions, viewport, login state, operator and storage location.
- For every transfer, record who moved the file, when, where it was stored, and why. Keep the original read-only or in a location where ordinary editing is prevented.
- Annotate only copies. Preserve the unmarked image, the annotated derivative and the relationship between them.
RFC 3227’s custody principle is that you should be able to clearly describe how evidence was found, handled and everything that happened to it. SWGDE guidance treats screenshots as the least forensically sound online-content acquisition method and recommends combining them with more inclusive acquisition methods such as browser capture utilities or saved content.
Should you save a PDF or page export as well?
Yes, when practical. A PDF or browser page export can preserve text, layout and additional context that a single raster image may omit. Keep it alongside the original screenshot, its hash and the acquisition notes; do not substitute it for the screenshot when the visual appearance is important.
Check every export. A successful download does not guarantee that lazy-loaded images, iframes, animations or interactive states were included. Note what was missing, what required a scroll or click, and whether a second capture was made after the content settled.
What can a screenshot prove—and what can’t it prove?
A screenshot can show what a particular browser session rendered at a recorded time. It can preserve wording, claimed balances, wallet instructions, domain spelling, support messages and the visual sequence presented to a visitor.
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It cannot, by itself, establish who operated the domain, that the displayed balance or profit existed, that the page had not changed before capture, or that a transaction occurred. Fraudulent platforms can display fabricated balances. Strengthen the record with saved-page or PDF material, browser or network records obtained lawfully, exchange statements, blockchain transaction data, communications and a coherent timeline.
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How should you handle dynamic pages, lazy loading and blocked content?
Lazy-loaded sections
Scroll through the document or use the site’s ordinary navigation until relevant images and panels have loaded. Wait for the page to settle, capture again, and log the delay or action that caused the content to appear.
Iframes and embedded chats
Inspect the final image for blank frames or missing chat content. If an embedded panel cannot be captured in the parent page, capture the panel separately when lawful and record its frame URL or visible identifier in your notes.
Bot checks, CAPTCHAs and failures
Do not defeat a security control or install software requested by the site. Record the challenge, blank page, timeout or failed request as an event. A failed capture is still useful evidence when the failure, time and attempted URL are documented.
Login-only states
Record that the page was captured while authenticated, but never include passwords, recovery codes or reusable session tokens in a report. Use a separate, controlled account when access is necessary and preserve only the minimum personal information needed for the investigation.
What information does the FBI want in an IC3 report?
The FBI says transaction details are the most important information for an IC3 report. Include wallet addresses, the cryptocurrency amount and type, dates and times, transaction hashes, domains, communications, exchanges and a timeline of contact. Report promptly even when some transaction information is missing.
Do not send additional money to pay a tax, unlock a withdrawal or recover funds. The FBI warns that people offering recovery for a fee may be running another scam. Preserve the offer and its contact details as part of the communications record instead.
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ScreenshotNeo is a website screenshot API and MCP server for developers. One request can return a PNG, JPEG, WebP or PDF, and its full-page capture can load lazy images. The service accepts a consent banner before capture and removes more than 60 known consent platforms, newsletter popups and chat widgets; each cleanup step can be turned off. Bot checks, CAPTCHAs, blank pages, timeouts, failed loads and cache hits cost nothing, and response headers identify the result with X-Page-Verdict and X-Billed.
Use the exact suspect URL you recorded. The examples below follow the ScreenshotNeo API documentation; replace the illustrative host with the complete URL, including its path and query string.
cURL
curl -G "https://api.screenshotneo.com/v1/shot" -d access_key=YOUR_API_KEY --data-urlencode url=https://suspected-domain.example -o shot.webpPython
import requests
r = requests.get("https://api.screenshotneo.com/v1/shot", params={"access_key": "YOUR_API_KEY", "url": "https://suspected-domain.example"}, timeout=90)
open("shot.webp", "wb").write(r.content)Node.js
const q = new URLSearchParams({ access_key: 'YOUR_API_KEY', url: 'https://suspected-domain.example' });
const res = await fetch(`https://api.screenshotneo.com/v1/shot?${q}`);ScreenshotNeo also provides an MCP server with take_screenshot, get_page_info and capture_pdf tools for Claude, Cursor and other MCP clients. Options include CSS-element capture, dark mode, device presets or custom viewports, retina scale, paper size and margins for PDFs, custom CSS and JavaScript, click-before-capture, hide selectors, waits for a selector, delay or network idle, request and resource blocking, custom headers, cookies, user agent and Authorization, timezone and geolocation, transparent backgrounds, resizing, chosen cache TTLs, signed image links, asynchronous jobs with signed webhooks, bulk capture of up to 100 URLs per call, a usage API and an OpenAPI specification. Parameter names used by other screenshot APIs also work, which can simplify a switch.
Every feature is on every plan. The Free plan includes 1,000 shots per month with no card; Starter is $5 for 3,000, Growth $15 for 15,000, Pro $39 for 60,000, Scale $99 for 250,000 and Business $249 for 1,000,000. Yearly billing gives two months free. Only clean shots are billed, so a bot check, blank result, failed load or cache hit does not consume a paid shot.
For a repeatable evidence process, still keep your own URL, UTC time, browser or API settings, response headers, downloaded file, hash and custody record. An API automates acquisition; it does not turn a screenshot into proof of ownership or payment.
Create a free ScreenshotNeo account to get 1,000 screenshots a month with no card.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.What are the common capture failures and fixes?
| Symptom | Likely cause | Fix and evidence note |
|---|---|---|
| Only the visible viewport is saved | A viewport-only command was used or the document was not treated as scrollable. | Use Firefox’s entire-page button or Chromium’s “Capture full size screenshot”; verify the output and record the browser version. |
| Images or panels are blank | Lazy loading, an iframe failure, a timeout or a blocked resource. | Wait, scroll, repeat the capture and log the missing resource or error. Preserve the failed result instead of deleting it. |
| A consent banner or chat widget covers text | The page was captured before the visitor-facing overlay was handled. | Record the overlay, capture the page after it is dismissed when safe, and keep both states if the overlay is relevant. |
| The address is unclear in the image | Full-page tools capture document content, not necessarily the browser chrome. | Make a separate address-bar capture or log the complete URL, redirects and query string. |
| The API response is not a clean image | The target returned a bot check, blank page, failed load or another verdict. | Inspect X-Page-Verdict and X-Billed, preserve the response and retry only if the site state or settings changed. |
| A page changes between captures | Dynamic content, rotating offers or operator edits. | Record each UTC time and setting, keep every original, and explain the change in the timeline. |
How should you organize the final evidence package?
Use a stable case folder with separate subfolders for originals, working copies, exports, communications and logs. Give each item a unique filename that includes the case identifier, UTC timestamp and a short description. The log should connect each screenshot to its URL, page state, hash, software settings and handler.
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Optional offline or restricted storage, such as a dedicated USB drive, can hold original captures, exports, hashes and custody logs. Storage media preserves files; it does not authenticate them. Keep at least one protected copy and avoid opening originals in software that may rewrite metadata.
Frequently Asked Questions
Can I use a private or incognito window for the capture?
You can, but private mode does not make the capture anonymous or automatically preserve the page’s context. Record that mode, avoid relying on its temporary history, and save the URL, time, settings and resulting files in your evidence log.
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Is a screenshot automatically admissible in court?
Admissibility depends on the jurisdiction, the proceeding and how the evidence was acquired and preserved. A contemporaneous log, hashes, custody records and corroborating transaction or communication records make the provenance easier to explain, but they do not guarantee admission.
What if the scam site disappears before I finish capturing it?
Keep the partial image, error pages, DNS or browser records that were lawfully available, and every timestamped attempt. Report the domain and communications promptly; an incomplete record is still preferable to an undocumented recollection.
Should I send the original image when asking for help online?
Usually share a working copy with personal identifiers, account numbers and session details redacted. Keep the untouched original and its hash private, and tell the recipient that the posted file is a derivative.
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