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Capture the suspected site as soon as you can, before its operators alter or remove it. Use a documented browser session and the browser’s full-page command, save the untouched PNG (or equivalent), and also preserve a PDF or saved-page export when practical. Log the complete URL, UTC time, browser and operating-system versions, viewport, login state, and operator. Then hash the original and keep a custody record. A screenshot is valuable context, but it cannot by itself prove who operated a domain, that a displayed balance was real, or that a transaction occurred.
This guide shows the Firefox and Chromium procedures, a repeatable evidence workflow, the records an IC3 report needs, common capture failures, and a browser-free option using ScreenshotNeo.
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What is the most defensible way to capture a crypto-scam website?
Work from a clean browser profile, avoid installing software promoted by the site, and record your environment before you interact. Capture the complete rendered page at the first opportunity, then preserve the original file exactly as downloaded. Make any highlights, redactions, or arrows on a copy, never on the original.
- Prepare. Note the computer, operating system, browser name and version, UTC time source, viewport or device setting, login state, network context, and the person operating the session.
- Open carefully. Use a clean profile if possible. Do not enter credentials, connect a wallet, send funds, or install an extension merely to see more of the page.
- Capture the whole page. Use Firefox’s full-page screenshot control or Chromium DevTools’ “Capture full size screenshot” command. If content appears only after scrolling, wait for it to settle and capture again.
- Preserve immediately. Save the original image, a PDF or saved-page export when practical, and a log containing the filename, cryptographic hash, byte size, and UTC time.
- Record context. Save the exact address, redirects, visible claims, wallet and transaction details, communications, and a timeline. Keep originals read-only or in restricted storage.
These steps make the image repeatable and explainable. They also reduce the risk that a later annotation or file conversion will be mistaken for the original observation.
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What pages and details should you capture?
Capture the entire user journey, not just the landing page. A convincing home page has little value if the deposit demand, withdrawal blockage, or contact trail is missing.
Capture every relevant state
- The landing page and the promotion, advertisement, social post, or message that sent you there.
- Sign-in, dashboard, deposit instructions, withdrawal screen, fee or tax demand, support chat, terms, contact page, and any referral or promotion page.
- Pop-ups, consent dialogs, failed loads, redirect screens, and dynamic content. Record what appeared and when rather than dismissing it without a note.
- Any displayed balance or profit. Label it as a claim shown by the site; fraudulent platforms can fabricate balances and profits.
Preserve the address and transaction trail
Keep a separate capture or log showing the complete address-bar value, including scheme, subdomain, path, query string, and any redirects. Note look-alike spellings and newly opened domains. For each payment, record the wallet address, cryptocurrency and amount, transaction hash, date and time, and exchange used. The FBI identifies these transaction details as the most important information for an IC3 report.
Save the communications
Export original emails, text messages, direct messages, social posts, phone numbers, usernames, and application names when the service permits it. Preserve the export in its native format as well as a readable copy, and add each item to the timeline with its UTC time.
How do I take a full-page screenshot in Firefox?
Firefox’s official procedure uses a built-in toolbox button. The label may vary slightly by release, so verify it in the installed version before you begin.
- Open the suspected page in Firefox and wait for the initial render. Record the URL, time, and session details in your log.
- Open Developer Tools (for example, with
F12or the browser menu). - Open the Developer Tools options menu and find Available Toolbox Buttons.
- Enable Take a screenshot of the entire page.
- Click the screenshot button in the Developer Tools toolbar. Firefox saves the image to your Downloads folder.
- Move the original immediately to restricted evidence storage, compute its hash, and write the filename, size, hash, and UTC capture time into your log.
Do not crop the downloaded image. If you need to point out a fee demand or wallet address, duplicate the file and annotate the duplicate.
How do I capture a full-size page in Chromium browsers?
Chromium-based browsers expose a DevTools command named Capture full size screenshot. Exact wording and menu placement can change, so search the command list in the version installed on the evidence computer.
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- Open the page in a clean profile, note the address and session metadata, and allow visible content to finish loading.
- Open DevTools and open the command menu (usually with
Ctrl+Shift+Pon Windows/Linux orCommand+Shift+Pon macOS). - Type Capture full size screenshot and select that command, not the viewport-only screenshot command.
- Wait for the image file to download. Check that its dimensions and bottom edge include the end of the document.
- Hash and store the original before making any derivative.
For a page that changes while you scroll, make a second capture after the dynamic section has settled and note the reason for both files. A successful download does not guarantee that every lazy-loaded image, iframe, animation, or interactive state was included, so inspect the result.
How do I make the capture suitable for evidence?
A defensible image is accompanied by contemporaneous notes and custody information. SWGDE describes screenshots as the least forensically sound online-content acquisition method and recommends combining them with more inclusive acquisition methods.
Before capture
- Write down the device identifier, operating-system and browser versions, time source, viewport or device preset, logged-in state, and operator.
- Record the network context that matters to interpretation, such as a normal connection or an isolated investigation profile.
- Note whether the page required a click, scroll, consent choice, or other action to reveal content. Do not perform a financial action to obtain a screenshot.
During capture
- Capture at the first safe opportunity and repeat after lazy content settles.
- Record pop-ups, redirects, errors, blocked resources, animations, and any content that appeared only after an interaction.
- Keep a screenshot of the address bar or a text log containing the exact URL, including query parameters.
After capture
- Copy the original file to restricted or read-only storage. An optional offline USB drive can hold originals, exports, hashes, and custody logs, but a drive does not authenticate evidence.
- Compute a cryptographic hash and record the algorithm, hash value, filename, file size, and UTC time.
- Make working copies for resizing, redaction, or annotation. Keep the original unchanged.
- Maintain a chain-of-custody entry for every transfer: who handled the item, when, where it was stored, and why it was moved.
RFC 3227’s standard is practical: “You should be able to clearly describe how the evidence was found, how it was handled and everything that happened to it.”
Which companion records make the screenshot more useful?
Pair the image with records that establish timing, provenance, and the money trail. The following set covers the material a reviewer or investigator will normally need.
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| URL and navigation | Complete URL, subdomain, path, query string, redirects, and look-alike spelling | Identifies the exact resource that was rendered |
| Session notes | UTC time, browser and operating-system versions, viewport, login state, operator, and network context | Explains the conditions under which the image was produced |
| Financial details | Wallet addresses, asset, amount, transaction hash, date and time, and exchange | Lets investigators trace the payment independently |
| Communications | Original exports of emails, texts, social posts, phone numbers, usernames, and application names | Connects the site to the contact and solicitation timeline |
| Preservation data | Original file, PDF or saved-page export, hash, size, filenames, errors, and custody entries | Shows that the material was preserved and handled consistently |
Should I save a PDF or a complete page export too?
Yes, when it is practical. A PDF or browser page export can preserve text, links, and layout that are difficult to inspect in a raster image, while the screenshot records exactly what was rendered on screen. SWGDE recommends using a combination of more-inclusive acquisition methods rather than relying on a screenshot alone.
Save the export alongside the image, hash each original separately, and record the software and settings used. If an export fails, keep the error message and continue with the image plus a written description of what was visible.
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What can a screenshot not prove by itself?
An image proves that particular content was rendered in one session; it does not establish the operator’s identity, the site’s ownership, the truth of a displayed balance, that the page was unchanged before capture, or that a payment occurred. It also cannot show content that never loaded or was hidden behind an unrecorded state.
For stronger corroboration, combine the image with the saved-page or PDF material, lawful browser or network records, exchange statements, blockchain transaction data, communications, and a clear timeline. Treat every on-screen balance or profit as a site claim until independent records support it.
How should I report the evidence to IC3?
Report promptly through the FBI’s Internet Crime Complaint Center (IC3). Include the site evidence even if one transaction field is missing; incomplete information is not a reason to delay.
- Wallet addresses, cryptocurrency type, amount, transaction hashes, dates and times, and the exchange used.
- Domains, complete URLs, redirects, and the pages captured.
- Emails, texts, social accounts, phone numbers, usernames, and application names.
- A concise timeline from first contact through deposits, withdrawal attempts, fee demands, and the capture.
- Filenames, hashes, storage location, and a summary of the browser and capture settings.
Do not send more money for a tax, unlock fee, or “recovery” service. The FBI warns that people offering to recover funds for a fee may be running another scam.
Or skip the browser setup
ScreenshotNeo is a website screenshot API and MCP server. It can accept a consent banner like a visitor and remove more than 60 known consent platforms, newsletter popups, and chat widgets before capture; each cleanup step can be turned off. Only clean shots are billed: bot checks or CAPTCHAs, blank pages, timeouts, failed loads, and cache hits cost nothing, and each response reports X-Page-Verdict and X-Billed headers.
Use the API for a repeatable first-pass capture, then preserve the returned file and the request metadata in the same evidence log as a browser capture. A sample request targeting a suspected site is below; replace the URL with the exact address you recorded.
Documentation: https://screenshotneo.com/docs/
cURL
curl -G "https://api.screenshotneo.com/v1/shot" -d access_key=YOUR_API_KEY --data-urlencode url=https://suspected-site.example -o shot.webpPython
import requests
r = requests.get("https://api.screenshotneo.com/v1/shot", params={"access_key": "YOUR_API_KEY", "url": "https://suspected-site.example"}, timeout=90)
open("shot.webp", "wb").write(r.content)Node.js
const q = new URLSearchParams({ access_key: 'YOUR_API_KEY', url: 'https://suspected-site.example' });
const res = await fetch(`https://api.screenshotneo.com/v1/shot?${q}`);ScreenshotNeo supports full-page capture with lazy images loaded, CSS-selector element capture, dark mode, 12 device presets plus custom viewports, retina scale, PDF paper size and margins, landscape mode and page ranges, HTML/CSS-to-image, custom CSS and JavaScript, pre-capture clicks, hidden selectors, waits for a selector, delay or network idle, blocking of ads, trackers, requests or resource types, custom headers, cookies, user agents and Authorization, timezone and geolocation, transparent backgrounds, resizing, a chosen cache TTL, signed 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 switching.
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An MCP server provides take_screenshot, get_page_info, and capture_pdf tools for Claude, Cursor, and other MCP clients. Keep in mind that an API response is still one rendered session: inspect the output, preserve the original, and supplement it with transaction and communication records.
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Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.What are the most common capture problems?
The image ends at the viewport
You used a viewport screenshot command rather than the full-page command. In Firefox, enable Take a screenshot of the entire page; in Chromium, run Capture full size screenshot from the DevTools command menu. Verify the bottom of the resulting file.
Do these 3 things before closing this tab:
1Fix the driver behind crashes, sound loss and screen glitches2Repair Windows errors before they cause bigger problems3Scan for outdated or missing drivers - takes under a minuteImages or sections are blank
Lazy-loaded assets may not have been requested yet, or an iframe may have failed. Wait for the page to settle, scroll through content if safe, capture again, and record the failure. Keep a PDF or saved-page export and a written note describing what remained blank.
A pop-up covers the evidence
Capture the pop-up as a separate state before dismissing it, then capture the underlying page. Record the order and UTC times so a reviewer can reconstruct the interaction.
The URL changed during loading
Save the initial and final addresses, including paths and query strings, and note each redirect. Take an address-bar capture or copy the values into the log.
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The browser or site blocks the page
Do not bypass a bot check by installing an unknown extension or entering sensitive information. Record the block screen, timestamp, and error; try a clean profile or a lawful alternative acquisition method, and preserve the failed attempt as part of the record.
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The downloaded file cannot be opened
Keep the original bytes and error message, then make a second capture using the same documented settings or another method. Hash every resulting file and identify which one is readable.
Which capture method should you choose?
Use the browser when you need to see and document an interactive state yourself. Add a PDF or saved-page export when text, links, or layout need independent inspection. Use an API when you need repeatable, scripted captures or many URLs, but still inspect each result and preserve the request context. In every case, completeness, reproducibility, metadata, preservation, and safety matter more than producing a single attractive image.
Frequently Asked Questions
Can a phone screenshot be used for a crypto-scam report?
It can document what was visible on the phone, but it often omits the complete URL, browser version, viewport details, and page content below the screen. Export the original image, record the device and UTC time, and obtain a desktop full-page capture or page export when you can.
Should I log in to reveal the scam dashboard?
Only if you can do so without sending funds, disclosing a reusable password, connecting a wallet, or installing software. Record the login state and the actions taken; never manufacture a transaction just to obtain a screenshot.
How long should I keep the original files?
Keep them for as long as the reporting agency, exchange, insurer, or legal adviser may need them. Maintain the original, hashes, exports, and custody entries together in restricted storage, and document any later transfer or deletion.
What if I do not have the transaction hash yet?
Submit the report with the URL, wallet address, amount, asset, dates, communications, and timeline you do have. Add the hash later when the exchange or wallet records make it available, preserving the follow-up as a new custody entry.
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