Print Production

Built for the guillotine, not the gallery.

A certificate is not a picture. It is a physical imposition problem: it gets printed on a sheet, trimmed on a guillotine, and handed to someone. Every number below is what BatchCanvas actually writes into the PDF it exports. Nothing here is aspirational — it is read out of the export code, so your print shop can check any line of it against a test file.

Not a government portal. BatchCanvas designs and prints documents you issue. It cannot issue anything. If you are looking for a birth, caste, income, death, domicile, EWS, or bonafide certificate, that comes from your state e-district portal — not from here.

Measured, Not Claimed

What the exporter writes

Each row is a value the PDF generator sets. The final column is the failure it prevents, which is usually the reason a batch comes back from the printer.

One row deserves a second read: the 300 option is a render scale, not a guaranteed delivered DPI. A 1414×1000 px template prints at 121 DPI on A4 and at roughly 378 DPI once scaled, so the number that actually reaches paper depends on your pixel dimensions against the sheet size — not on the name of the option you picked.

Property Value written Failure it prevents
Crop mark length 3 mm default, adjustable Trimmer has no line to follow, so every card is cut slightly wrong.
Crop mark offset 1.5 mm from the trim edge, plus the bleed so the marks always sit outside the bleed Marks printed inside the artwork, or lost in the trim.
Crop mark weight & colour 0.5 pt, 25% grey Hairline rules vanishing on press, or reading as printed content.
TrimBox Set to the cell block on every grid export — the area the cells occupy on the sheet, gaps included Press trimming to the sheet edge instead of the card, wasting the margin.
BleedBox Cell area expanded by your bleed value, default 0 mm White slivers along a full-bleed background after trimming.
Image resolution Two profiles: Screen / Web 96 at 1× template pixels, or Print 300 at 3.125×. Clamped at a 6000 px longest edge. Visible softness or banding on a 300 DPI contract, or a browser OOM on very large sheets.
Effective output DPI A 1414×1000 px template yields 121 DPI at 1× and ~378 DPI at 3.125× on A4. Bigger templates give more. Assuming the profile name is the delivered number. The label is a render scale; actual DPI depends on your pixel dimensions against the paper size.
Barcode symbology Code 39, drawn as vectors Non-scannable barcodes from a bitmap that blurs in print.
Duplex mirroring Long-edge and short-edge flip modes, mirrored on the correct axis Backs landing upside down or offset after a two-sided run.
Paper sizes A4 210×297 mm and US Letter 215.9×279.4 mm, both orientations Silent reflow when the print shop substitutes stock.

Two things to check on your own test file before committing to a large run: that a QR code still scans after printing at your chosen card size, and that your longest attendee name still sits inside the safe area once auto-shrink has run. Both are properties of your data and your card size, not of the exporter.

Imposition & Cost

Sheet Yield & Paper Cost Estimator

A print shop prices sheets, not documents. Pick your card format, enter your record count, and this returns the sheet count, the rotation-aware yield, the waste percentage, and the paper cost.

Preflight Knowledge Base

Frequently Asked Questions

What crop mark length and offset does BatchCanvas write?

A 3 mm mark at a 1.5 mm offset from the trim edge, at 0.5 pt line thickness in 25% grey. Both values are adjustable in PDF print settings. When a bleed is set, the marks are pushed outside the bleed edge so they never print on the artwork.

Does the exported PDF have a real TrimBox and BleedBox?

Yes. On multi-up grid exports BatchCanvas sets the TrimBox to the cell block on the sheet (every cell plus the gaps between them) and the BleedBox to that area expanded by your bleed amount, which defaults to 0 mm.

How do I stop my print shop rejecting a large batch?

Send them the imposition rather than the document count. What matters to a print shop is the sheet count, the trim size of each cell, the paper stock, and whether the bleed and crop marks are present. Copy the quote below and it states all four.

Are you a government portal? Can I get a birth or caste certificate here?

No. BatchCanvas is a design tool, not a government service, and it issues nothing. Birth, caste, income, death, domicile, EWS, and bonafide certificates are issued only by your state e-district portal or the relevant department. If you are the one issuing certificates in bulk, you are in the right place.

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