Firefox extension · Chrome test build
User guide
Last updated 2 October 2026. Chrome installation is covered in the test-build guide.
How to capture, measure, edit and save, with every mouse and keyboard control. The same guide is built into the add-on: open Settings and choose Help & user guide.
1. Capture a page
Click the Screenshot Crawler icon in your browser toolbar. The large button runs your default capture type. The arrow beside it opens the full list.
| Capture type | What you get |
|---|---|
| Page + all panels | One image of the whole page with every scrolling area inside it expanded. |
| Visible area | Exactly what the window shows. |
| Full scrolling page | The outer page from top to bottom, with inner panels left as they are. |
| Select region | Drag a box around the part you want. Esc cancels. |
| One panel | Point at a scrolling area and click it, or press Enter, to capture it in full. ↑ moves the selection out to the surrounding area. Esc cancels. |
| Panels only | Lists the scrolling areas found on the page. Tick the ones you want and choose Capture selected. Each is saved separately. |
Settings › Modes & shortcuts chooses the default capture type, and the order in which the types appear. It can also hide the ones you never use.
Delay
The Delay menu waits 3, 5 or 10 seconds before capturing, which gives you time to open a menu or hover over something. The toolbar icon counts down, and Cancel capture in the popup stops it.
Clean page
Clean page removes cookie banners, chat widgets and anything else in the way before you capture. Click a block on the page to remove it.
| [ and ] | Shrink or grow the block under the pointer before you click. |
| Ctrl+Z | Undo the last removal. |
| Enter | Capture the cleaned page. |
| Esc | Cancel and put the page back. |
The bar at the bottom also offers Article only, Hide all images and Hide controls, and lets you pick the capture type.
On-page hints
While you pick a panel or clean a page, a small card in the lower-left corner lists that tool's keys. It fades after a few seconds; point at it to keep it. The ruler readout in the lower-right corner does the same for rulers, listing the keys for the guide you are dragging or have selected.
The × on the card, or Hide tips in the readout, hides the hints for that one tool. Settings › Essentials › Show on-page hints turns them all off, and switching it back on brings back any you hid. Hints never appear in a capture.
Vector PDF
Vector PDF hands the live page to the browser's print system, with scrolling panels opened. Text stays selectable where the page's print styles preserve it. Firefox asks where to save. Chrome opens print preview: choose Save as PDF and confirm the save, or cancel. Paper size, margins and background settings affect the output. No editable result is created.
One-click capture
Settings › Modes & shortcuts › Quick Capture makes a click on the toolbar icon run your default capture straight away. Right-click the icon and choose Open capture menu to reach the full menu.
2. Rulers and guides
Open the popup, expand Rulers & guides and choose Show rulers. Rulers appear along the top and left of the page, measured in CSS pixels from the page's top-left corner.
Inset page moves the website inside the rulers so they cover nothing. Overlay page lays the rulers over the page instead. The page returns exactly to its original layout when rulers are turned off.
Add and place guides
| Drag from the top ruler | Adds a horizontal guide. |
| Drag from the left ruler | Adds a vertical guide. |
| Drag a guide | Moves it. While you drag, the guide locks to the edge of the element under the pointer when it comes within 4 px, and that element is outlined. Keep moving and it lets go. An edge it has let go of stays off for the rest of that drag, so you can drop a guide just beside it. |
| Alt while dragging | Turns snapping off, so the guide goes exactly where you drop it. |
| Alt+click an element | Puts four guides on its edges in one step. Hold Alt first to see which element is outlined. The click does not reach the page, so a link there does not open. Every element you Alt+click keeps a pink outline, and its four guides dim so the outline stands out. The latest one, or the one you point at, shows its size. Pointing at a dimmed guide, or selecting it, brings it back to full strength. |
Guides snap to an element's outer box. Where an image has transparent padding or text sits inside a taller line, drag with Alt held or finish with the arrow keys.
A guide is a position between two pixels, drawn on the pixel after it. So a guide on an element's left or top edge covers the element's first pixel, and one on its right or bottom edge covers the first pixel past it. Right minus left is then exactly the element's width.
Move a guide by exact amounts
Click a guide to select it. The selected guide turns orange and its position is printed on the ruler.
| ← → | Move a selected vertical guide 1 px. |
| ↑ ↓ | Move a selected horizontal guide 1 px. |
| Shift+arrow | Move it 10 px. |
Keys typed into a text field on the page stay with that field.
Remove guides
| Double-click a guide | Removes it. |
| Delete or Backspace | Removes the selected guide. |
| Click the corner square | Removes every guide. Clear guides in the popup does the same. |
Measure
- The readout in the lower-right corner shows the pointer position and how far it is from the nearest guide, such as "96 px right, 473 px down". While you drag or select a guide it also lists the keys that apply; On-page hints explains how to hide them.
- Turn on Show guide spacing in the popup to label the gaps beside the selected guide. Show all guide gaps labels every gap.
- With guide spacing on, point inside four guides to see the width and height of the box between them. A guide on an element's left edge and one on its right edge measure its full width.
- Inside an element you Alt+clicked, its own size is shown, even where guides from other elements cross it. Moving or removing one of its four guides ends this for that element.
- Copy measurements, in the readout or the popup, copies every guide position and the spacing between them as plain text.
Keep and reuse guides
- Keep guides after reload in the popup saves the guides for that page and puts them back when it reloads. Your browser asks for permission the first time you turn it on.
- Settings › Capture › Include rulers and guides in captures keeps guides in your screenshots. It is off by default. Visible-area and region captures include the rulers too; longer captures keep the guides without the repeating ruler strips.
- Settings › Presets & guides › Guide templatesPro saves a set of guides and applies it automatically on matching pages.
3. Edit a capture
Most captures open in the editor. Settings › Essentials › After capture can copy or save them instead.
Zoom
Use Fit, 100%, − and +, or hold Ctrl and scroll. A touchpad pinch zooms too.
Crop region
Crop opens with the whole picture selected. Drag a handle or any part of a side to resize the selection, or drag anywhere else to draw a new box. Drag inside a box you drew to move it. The ratio buttons fix the shape, from 1:1 to A4 and Letter, and Flip turns it on its side.
| Enter or double-click inside | Creates the crop and copies it to the clipboard. |
| ← → ↑ ↓ | Move the box 1 px. With Shift, 10 px. |
| Alt+arrow | Resize the box from its lower-right corner. |
| Esc | Cancel. |
Annotate and redact
| Key | Tool |
|---|---|
| A | Arrow |
| R | Box |
| T | Text |
| B | Blur |
| H | Highlight |
| D | Redact, which paints solid black |
| S | Sticker |
| Ctrl+Z | Undo |
| Enter | Apply |
| Esc | Cancel |
Shift+click a mark to select and move it. In a text box, Enter starts a new line, Ctrl+Enter finishes the text and Esc abandons it. A redacted capture is exported without a PDF text layer, so the covered text cannot be recovered.
Read text, articles and colours
- Read textPro: drag a box over the capture to get its text. It uses the page's own text where it can and reads the pixels in English, offline, where it cannot.
- Extract article shows the page's main article as plain text, when the capture found one.
- Pick colour: click the capture to copy that pixel's hex value. Esc cancels.
- Esc closes the text panel.
Captured items
Panels, crops, annotations and comparisons each become an item in the row above the capture. ← → Home and End move between them. Rename an item, then press Enter to keep the name or Esc to cancel.
4. Save and export
- Save PNG, Save JPEG and Save WebP save to your download folder. Save AVIF appears when your browser can write AVIF.
- Copy image puts the capture on the clipboard.
- Save as PDF uses the page size, margins, header, footer and watermark set in Settings › Output & raster PDF. A searchable text layer inside the PDF is Pro.
- Save as… opens your browser's save dialog so you can choose the folder and name.
- Open folder shows the last saved file.
- Save all saves every panel from a Panels only capture.
Settings › Output & raster PDF › Ask where to save each file makes every save open the dialog.
ComparePro
Set baseline stores the current capture. Later, Compare marks what changed against it, and Export report saves the result as HTML and JSON.
5. Screen recording
Choose Screen recording in the popup to record the current tab as a WebM video. With Auto-scroll on, the page scrolls itself while recording. Pick a panel scrolls one panel instead of the whole page.
Open the popup again and choose Stop recording and save, or Discard recording. Free records up to 10 seconds with a watermark. Pro records up to five minutes without one.
Settings › Recording sets the scroll speed, the start delay and the requested rate: 15 frames per second with smoother recording on, or 5 with it off. The actual rate depends on your device. Chrome asks for tab-recording access when you first start.
6. Batch capturePro
Choose Batch capture at the foot of the popup. Paste addresses one per line, up to 500. Lines starting with # are ignored.
- Choose a folder inside Downloads, a capture type and the file type: raster PDF, PNG or Vector PDF. Vector PDF requires a browser save or print confirmation for each address; use raster PDF or PNG for unattended saving.
- Article only keeps each page's main article and drops the rest.
- More batch options combines every capture into one file, with an optional title page, and sets how long to let each page settle after it loads.
- Stop ends the run. Skip drops an address that has not started yet. The run continues if you close the batch page.
7. Keyboard shortcuts
Turn keyboard shortcuts on in Settings › Modes & shortcuts › Keyboard shortcuts. Firefox lets you change each key there. In Chrome, assign keys at chrome://extensions/shortcuts; Stop and Discard recording have no default key because Chrome allows only four suggested shortcuts.
| Suggested key | Action |
|---|---|
| Alt+Shift+V | Capture the visible area |
| Alt+Shift+F | Capture the full scrolling page |
| Alt+Shift+P | Pick one panel |
| Alt+Shift+R | Select a region |
| Alt+Shift+S | Stop recording and save |
| Alt+Shift+X | Discard the recording |
The keys inside each tool, such as the annotate letters and the ruler arrow keys, always work and are listed in the sections above.
8. Free and Pro
Free includes all six capture types at full length, Clean page, Vector PDF, rulers and guides, crop, annotate, redact, colour picking and every image format. Free still images carry a thin credit line along the bottom edge, which you can crop off.
Pro adds:
- Batch capture from a list of addresses
- Capture presets for each site
- Saved guide templates
- Export and import of presets and templates
- A searchable text layer in PDFs
- Read text from any part of a capture, offline
- Compare against a saved baseline, with a report
- Watermark colour and opacity
- Screen recording up to five minutes without a watermark
- Still images without the credit line
Pro is the US$5 early-adopter price, paid once. Existing purchasers keep Pro permanently. Enter your key in Settings › Licence & support.
9. Privacy and help
Captures, text and settings stay on your computer. The add-on sends nothing to a server and collects no analytics.
If a page captures incorrectly, try the most specific capture type first and keep the tab in front while it runs. Then email support@screenshotcrawler.com with the page address, browser and extension versions, and the capture type you used. For Chrome installation or reload help, use the Chrome test-build guide.