Ferramentas PDF relacionadas
Por que usar uma ferramenta dedicada para etiquetas?
Marketplace shipping PDFs often contain one label per page with the same margins and chrome (logos, borders, ads). Cropping manually in a preview app is slow and error-prone. This tool lets you define the label box once on page 1 and reproduce it across the whole file.
O que voce ganha
- One selection, many pages: Same crop proportions on every included page.
- Presets: Save layouts for tomorrow’s batches.
- Page range: Crop only pages you need.
- Margins: Slightly expand the crop to avoid cutting barcode edges.
- Privacy: Everything runs locally in the browser.
Como o recorte funciona aqui
Your selection is stored as fractions of the rendered first page (0–1 for position and size). For each output page, the PDF is rendered at the same scale, the same fractions are applied, and the pixel region is written into a new PDF page sized to match the cropped content in PDF points.
Bom saber
Raster cropping is the most predictable method for label PDFs from various sellers. If you need pure vector trimming, use a desktop prepress tool.
Dicas para melhores resultados
- For very fine barcodes, zoom the browser preview before judging the crop; output matches PDF page pixels at 1:1 scale.
- Add a small margin if scanners misread cropped edges.
- If page sizes differ, the same fraction still maps proportionally on each page.
Boas praticas
Keep an original archive of downloads from the marketplace. Run a one-page test before processing hundreds of labels.
Qualidade vs tamanho do arquivo
- Output uses one canvas pixel per PDF point (scale 1), matching typical on-screen PDF sharpness.
- PNG pages preserve sharp edges; expect larger files than heavily compressed JPEG PDFs.
Casos de uso comuns
- Meesho / marketplace labels: Trim to printable label only.
- Thermal printers: Export a tight PDF for 4×6 or A6 workflows.
- Archiving: Remove headers before storing long-term.
Como funciona por dentro
PDF.js renders each page to an HTML canvas. The selected rectangle is copied per page. pdf-lib builds a fresh PDF with one embedded PNG per page.
Etapas do processamento
- Load: Parse PDF in-browser with PDF.js.
- Select: Capture normalized crop from page 1.
- Render & clip: Rasterize each page and copy the crop region.
- Assemble: Embed PNGs into a new PDF with matching page dimensions.
PDFs grandes sao processados em sequencia no navegador; fechar outras abas pode ajudar.
Perguntas frequentes
Does the crop apply to every page the same way?
Yes. The tool stores your selection as a proportion of the first page’s viewport (left, top, width, height as fractions). The same proportions are applied to each page you include, so when all pages share the same template (typical for label PDFs), every label is cropped consistently.
Will my PDF be uploaded to your servers?
No. PDF.js and pdf-lib run entirely in your browser. Your file never leaves your device.
What are presets?
Presets save the normalized crop rectangle and a name in your browser’s local storage. They are useful when you repeatedly process the same label layout (for example daily Meesho batches). You can load or delete presets anytime.
Why is output a new PDF of images?
Each page is rendered to a canvas and cropped to pixels, then embedded as PNG into a new PDF. This guarantees the visible crop matches what you drew, including for complex vector or mixed PDFs. File size may increase compared to a vector-only PDF.
Is there a page or file size limit?
Very large PDFs are limited by your device memory. The tool warns above a maximum page count and file size to avoid freezing the tab.
Can I use this for Flipkart, Amazon, or other labels?
Yes. Any multi-page PDF with a repeated layout can use the same workflow: draw the region on page 1 and apply to all pages.