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The shipping label cropper reformats an existing static PDF onto portrait pages measuring 4 × 6 inches. It does not buy postage, generate tracking identifiers or rebuild barcodes. You select the complete label region on each source page, and the tool fits that rectangle using one scale factor for both directions. A proportional fit preserves the relationship between barcode width and height; it cannot restore detail missing from an original bitmap.

Here w and h are the crop dimensions after the applicable rotation, and m is the fit margin in points. One standard PDF point is 1/72 inch. A 90° or 270° turn swaps dimensions before fitting. The default nine-point margin reduces the fitting area to 270 × 414 points. That margin is a fitting input, not a promise that the physical printer has an identical unprintable border.

Coordinates are measured from the top-left of the displayed page, taking the source page boxes and original rotation into account. The crop must remain inside that displayed page. After scaling and offsets, the complete selected rectangle must remain inside the output page or generation is blocked. This geometric check cannot determine whether you selected every necessary address, routing mark or barcode border.

Export embeds the original static page content inside a clipping region rather than using a screenshot. Existing vector content remains PDF drawing content; existing bitmaps remain bitmaps. Cropping controls what is visible, but surrounding content may remain within the resulting PDF. It is not secure redaction.

Begin with a valid shipping-label PDF from your carrier or selling platform and keep the original. This cropper is useful when an existing download places the label on a larger page. Select one supported static PDF. Image files such as JPG and PNG are not accepted by this workflow, and changing a filename to end in .pdf does not convert its contents.

Inspect the first page before selecting the crop. Find the entire label, including the destination, sender details required for that label, routing symbols and blank border around each barcode. Drag a rectangle or enter top-left coordinates, width and height in PDF points. Do not select only the dark barcode bars. Surrounding quiet space belongs in the crop even when it looks like unused paper. Check that the crop does not capture an unrelated second label.

Choose extra rotation in quarter turns if needed. Start with 100% zoom and zero offsets, then examine the calculated output dimensions. The fit margin changes the available fitting rectangle; offsets move the result within the page. Increasing zoom can cut the selected region at the output edge, so an invalid placement is rejected. Reduce zoom or movement when that happens.

Move through every included page and mark its complete label checked. You may copy settings to matching pages, but matching displayed dimensions, page boxes and rotation do not establish identical label placement. Copied settings reset review, and pages with different geometry retain their settings. Inspect each copied crop separately, or exclude a page that should not be printed. Generation requires every included page to be reviewed with valid settings.

Generate the PDF, download it and open the full output. The on-page output preview shows only its first page. Set your printer driver to 4 × 6 paper and actual size or 100%. Check orientation, clipping, darkness and readable text, then test a physical barcode scan before a batch. A settings or summary link cannot transfer the source PDF: choose the file again on another visit or device.

Use PDF points when moving between the source preview and numeric controls. A Letter page is 612 × 792 points, while the output is always 288 × 432 points. Larger source paper does not require selecting its entire page. Select only the complete label region and let uniform fit handle its proportions. The limits below describe this implementation, not every PDF file that another editor can open.

Encrypted files, interactive fields, annotations and nonstandard UserUnit values are rejected. The static-file checks also reject document actions, JavaScript and page additional actions; these checks do not constitute a complete PDF security audit. Export a suitable static copy from the originating provider when possible. Do not interpret successful import as carrier validation, postage verification, physical printer compatibility or proof that every output barcode can be scanned.

A portrait label with the default margin

Assume the selected region is exactly 288 × 432 points, rotation is zero, zoom is 100% and offsets are zero. With a nine-point margin, available fit width is 288 − 18 = 270 and height is 432 − 18 = 414. Scale is min(270 ÷ 288, 414 ÷ 432) = 0.9375. Placed artwork is 270 × 405 points, centered nine points from the left and 13.5 points from the bottom. The output PDF page is still 288 × 432 points. If the source already provides a correct 4 × 6 label, a zero-margin fit instead keeps its original size.

A landscape region turned upright

Assume a 432 × 288 point label region with an extra 90° clockwise rotation and no existing source rotation. The fit dimensions become 288 × 432. With zero margin, 100% zoom and zero movement, scale is min(288 ÷ 288, 432 ÷ 432) = 1. The full label occupies the output page without nonuniform stretching. If the source page already carries rotation metadata, the tool accounts for it when mapping your displayed selection. Choose rotation by inspecting the preview rather than adding a turn merely because the original file reports a rotated page.

An enlargement that would clip

Assume a selected region measuring 200 × 300 points, margin nine, 100% zoom and no offsets. Fit scale is min(270 ÷ 200, 414 ÷ 300) = 1.35, producing 270 × 405 points. Increasing zoom to 110% multiplies scale by 1.10, giving 1.485 and a 297 × 445.5 point placement. Both dimensions exceed the 288 × 432 page, so export is rejected. At the original 100% zoom, moving right by ten points would place the left edge at 19 and the right edge at 289, also outside the page. These arithmetic examples describe geometry only; a valid fit still needs complete-label review and a physical print check.

Leave the barcode's blank border intact instead of treating it as waste. This tool cannot identify a quiet-zone requirement automatically or tell which routing symbol is essential for a particular carrier. When an edge is uncertain, compare with the original provider's label rather than cropping closer to enlarge the barcode. Include the complete address and service information as well as the bars.

A clean screen preview is not a scanner test. Printer resolution, darkness, paper, worn print heads and driver scaling can affect the physical result. Set actual size after choosing the correct paper size; a second fit-to-page operation can change the dimensions again. Inspect the downloaded PDF rather than relying solely on the first-page preview shown here.

Do not distribute cropped files as if surrounding private information had been erased. A clipping box hides content visually without securely removing every original object. Use a separate redaction workflow when removing information is the objective. File bytes are processed locally by this tool, but normal site requests still follow its privacy controls. Settings included in a shared URL may appear in browser history and server logs; a link does not include the label PDF.