Resources · 13 free tools

Print-production tools, free to use.

The calculators, checkers and references our pre-press team reaches for every day — now yours. Check your file, size the job, pick the stock, grab the template, then send us the work.

Check your file

Tool 01
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Is this image sharp enough to print?

Drop a JPG, PNG, TIFF or PDF, tell us the print size, and get the effective resolution with a plain-English verdict — plus colour-mode and bleed warnings from the same preflight engine our prepress team uses.

Image resolution (DPI) checker
Drop a JPG, PNG, TIFF or PDF here — or click to choose
Files are inspected and discarded; nothing is stored. Up to 60 MB.
Tool 02
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Bleed & safe-zone calculator

Pick a trim size, set bleed and safe margin, and get the exact document size, safe box and pixel dimensions for your artwork — in inches or millimetres.

Bleed & safe-zone calculator
Document size (with bleed)
3.75" × 2.25"
Set your artboard / page size to this
Trim size
3.5" × 2"
Final cut size — place crop marks here
Safe zone
3.25" × 1.75"
Keep text & logos inside this box

Raster export at 300 DPI: 1125 × 675 px with bleed (trim 1050 × 600 px). Kolt standard: 0.125" bleed and 0.125" safe margin on all products; 0.25" bleed and 1" safe on banners and large format.

Tool 03
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Pantone, CMYK & HEX converter with press preview

Convert any brand colour between screen, process and spot references, see how it will look on coated, uncoated and kraft stock, and find the closest Pantone to specify for letterpress, foil or spot-colour work.

Pantone ↔ CMYK ↔ HEX converter with press preview

Screen values are approximations. For an exact match we mix to the physical Pantone swatch — tell us the number on your quote.

Coated / gloss
Uncoated (Colorplan, cotton)
On kraft
HEX / RGB
#B87333
rgb(184, 115, 51)
CMYK build
C0 M38 Y72 K28
process approximation for digital / offset
Closest Pantone solid coated
Tool 04
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The 25-point prepress checklist

The same checks our operators run on every incoming file. Tick them off as you go (progress is saved in your browser) or download the PDF to pin above your desk.

Interactive prepress checklist
0 / 25 checked
File format
Size, bleed & safe zone
Colour
Resolution
Type & lines
Layout
Before upload

Size it right

Tool 05
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Label size finder for jars, bottles, tins & boxes

Measure your container — or pick a common one — and get the recommended label width and height, wrap length, and the nearest standard die sizes that avoid a custom-die charge.

Label size finder
Recommended label size
8.14" × 1.75"
width × height — leaves ¼" clear above and below the straight wall
Circumference
8.64"
π × diameter — a label wider than this needs overlap
Nearest stock sizes
8×2 · 5×3 · 6×2
standard dies — no custom die charge

Tapered containers: measure the diameter at the top and bottom of the label area; if they differ by more than 1/8", use a shorter label or ask us about a contour (curved) die. Squeeze bottles and pouches: keep the label 3/8" from any seam or curve.

Tool 07
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Booklet page-count & binding planner

Rounds your page count to a printable multiple of four, recommends saddle stitch vs perfect binding for your paper, and gives the spine thickness and creep so your layout is right first time.

Booklet page-count & binding planner
Print as
32 pages
30 rounds up to a multiple of 4 — add 2 blank or "notes" pages
Sheets
8
folded sheets (4 pages each)
Recommended binding
Saddle stitch
Up to about 92 pages on this stock before creep and bulk at the spine become a problem.
Spine thickness
0.072"
creep: negligible

Supply pages as single pages in reading order (not printer spreads). Saddle-stitched books need a page count divisible by 4; perfect-bound books only need an even count, but 4-up saves money. Cover files: for perfect binding, use the spine width above in a single wrap-around cover spread.

Tool 08
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Hardcover & softcover spine width calculator

Enter your page count, interior stock and binding to get the text-block thickness, finished spine and the exact spine width to set in your cover PDF.

Book spine calculator
Text block
0.540"
13.7 mm · ≈ 17/32" · leaves × caliper
Finished spine
0.736"
18.7 mm · ≈ 24/32" · block + 2 boards
Cover-art spine width
0.798"
20.3 mm · ≈ 26/32" · incl. hinge allowance
240 pages = 120 leaves × 0.0045" caliper. Boards: 2 × 0.098". Results are a pre-press estimate; final spine is confirmed on your proof.
Read the full guide: how to measure a hardcover spine

Paper & materials

Tool 09
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GF Smith Colorplan — all 55 colours

We stock the complete Colorplan range in Houston — the through-coloured uncoated board behind the world's best business cards, luxury folders and wedding suites. Tap a shade to see the official swatch, then request a quote with your colour names.

Tool 10
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Paper weight converter

Convert gsm to pounds (and back) across text, cover, bond, index, tag and bristol basis weights, with an approximate point caliper.

Paper weight converter · gsm ↔ lb
Grams per square metre
270 gsm
≈ 11 pt caliper on uncoated cover stock
Equivalent basis weights
  • Text / Book / Offset183 lb
  • Cover100 lb
  • Bond / Writing72 lb
  • Index149 lb
  • Tag166 lb
  • Bristol123 lb

Common picks: 100# gloss text ≈ 148 gsm · 14pt cover ≈ 350 gsm (130# cover) · 16pt ≈ 400 gsm · GF Smith Colorplan 540 gsm ≈ 200# cover.

Templates, timing & terms

Tool 11
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Free print templates — every die-line in one place

Vector PDF templates with trim, bleed and safe-zone guides for business cards, postcards, folders, labels, booklets, signs and banners. Search a size, download, design on top.

Free print template library — 61 die-lines

Every template is a vector PDF with trim, bleed and safe-zone guides at exact size — open it in Illustrator, InDesign, Affinity or Canva (import as PDF), design on top, hide the guide layer, export. Need a size that isn't here? Type any dimensions on a product page's Templates tab.

Business cards & stationery
Shop →
  • Business card · 3.5 × 20.125" bleed PDF
  • Square business card · 2.5 × 2.50.125" bleed PDF
  • Mini card · 3.5 × 1.50.125" bleed PDF
  • Letterhead · 8.5 × 110.125" bleed PDF
  • #10 Envelope · 9.5 × 4.125 (no bleed)no bleed PDF
  • A7 Envelope · 7.25 × 5.25 (no bleed)no bleed PDF
  • Notecard A2 · 5.5 × 4.250.125" bleed PDF
  • A7 Invitation · 5 × 70.125" bleed PDF
Postcards, flyers & brochures
Shop →
  • Postcard · 4 × 60.125" bleed PDF
  • Postcard · 5 × 70.125" bleed PDF
  • EDDM postcard · 6.5 × 90.125" bleed PDF
  • Rack card · 4 × 90.125" bleed PDF
  • Flyer · 8.5 × 110.125" bleed PDF
  • Half-page flyer · 5.5 × 8.50.125" bleed PDF
  • Tri-fold brochure flat · 11 × 8.50.125" bleed PDF
  • Bi-fold brochure flat · 17 × 110.125" bleed PDF
  • Door hanger · 4.25 × 110.125" bleed PDF
  • Bookmark · 2 × 70.125" bleed PDF
  • Table tent flat · 4 × 120.125" bleed PDF
Presentation folders
Shop →
  • 9 × 12 folder flat (2 pockets) · 18.375 × 160.125" bleed PDF
  • Legal folder flat · 19.5 × 18.50.125" bleed PDF
  • Mini folder flat · 12.5 × 130.125" bleed PDF
Roll & sheet labels
Shop →
  • Label · 2 × 10.0625" bleed PDF
  • Label · 2 × 20.0625" bleed PDF
  • Label · 3 × 20.0625" bleed PDF
  • Label · 3 × 30.0625" bleed PDF
  • Label · 4 × 20.0625" bleed PDF
  • Label · 4 × 30.0625" bleed PDF
  • Label · 4 × 6 (shipping)0.0625" bleed PDF
  • Label · 6 × 40.0625" bleed PDF
  • Label · 8.5 × 2.75 (bottle wrap)0.0625" bleed PDF
  • Sheet label · 8.5 × 110.125" bleed PDF
Booklets & books
Shop →
  • Booklet page · 5.5 × 8.50.125" bleed PDF
  • Booklet page · 8.5 × 110.125" bleed PDF
  • Square booklet page · 8 × 80.125" bleed PDF
  • Digest page · 6 × 90.125" bleed PDF
  • Hardcover trim · 6 × 9 (use spine calculator for cover)0.125" bleed PDF
  • Hardcover trim · 8.5 × 110.125" bleed PDF
Signs & marketing
Shop →
  • Yard sign · 18 × 240.125" bleed PDF
  • Yard sign · 24 × 360.25" bleed PDF
  • Poster · 11 × 170.125" bleed PDF
  • Poster · 18 × 240.125" bleed PDF
  • Poster · 24 × 360.25" bleed PDF
  • Window cling · 8.5 × 110.125" bleed PDF
  • Floor graphic · 24 × 240.25" bleed PDF
  • Bumper sticker · 11.5 × 30.125" bleed PDF
  • Magnet · 3.5 × 20.125" bleed PDF
Banners & displays
Shop →
  • Vinyl banner · 2 × 4 ft0.25" bleed PDF
  • Vinyl banner · 3 × 6 ft0.25" bleed PDF
  • Vinyl banner · 4 × 8 ft0.25" bleed PDF
  • Vinyl banner · 4 × 10 ft0.25" bleed PDF
  • Mesh banner · 6 × 3 ft (fence)0.25" bleed PDF
  • Step & repeat · 8 × 8 ft0.25" bleed PDF
  • Step & repeat · 10 × 8 ft0.25" bleed PDF
  • Retractable · 33.5 × 810.25" bleed PDF
  • Retractable · 36 × 920.25" bleed PDF
  • X-stand · 24 × 630.25" bleed PDF
  • Tabletop tension · 60 × 360.25" bleed PDF
  • Feather flag · 30 × 1080.25" bleed PDF
  • SEG / tension wall · 10 ft (118 × 89)0.25" bleed PDF
  • Table cover 6 ft throw flat · 132 × 900.25" bleed PDF
Tool 12
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When will it arrive? Production + transit from Houston

Enter your ZIP and product, choose ground or air and standard or rush production, and see a delivery-date window that counts business days from proof approval.

Delivery date estimator — from Houston, TX
Production
2–3 business days
if the proof is approved before 11 AM CT today
Transit
Enter a ZIP
US ZIP codes only — international via quote
Estimated delivery
business days, excludes holidays; proof approval is the clock start

We're a production-only facility — every order ships (no walk-in pickup), so Houston-area orders usually arrive the morning after production. Need it sooner than the range shown? Use the rush option above, then send the specs — we'll confirm a firm date within two business hours.

Tool 13
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Print glossary — the terms on your quote, explained

From bleed and blockout to SEG, PUR and Smyth sewn: short, plain definitions with links to the product or guide where each one matters.

Print glossary — 62 terms
Aqueous coating
A fast-drying, water-based clear coat applied on press for scuff resistance and a gloss, satin or matte look. Cheaper than UV or lamination. Learn more →
Bleed
Artwork extended 0.125" (0.25" on large format) past the trim line so no white edge shows after cutting. Learn more →
Blockout
An opaque core layer in 18oz vinyl that stops light passing through — required for double-sided banners. Learn more →
BOPP
Biaxially oriented polypropylene — a waterproof, tear-resistant label film in white, clear or silver. Learn more →
Caliper
Paper thickness in thousandths of an inch (points). 14 pt ≈ 0.014" ≈ 350 gsm. Learn more →
Case binding
Hardcover binding: sewn or glued text block set into rigid boards wrapped in cloth or printed paper. Learn more →
CMYK
Cyan, magenta, yellow and black — the four process inks that build full-colour printing. Learn more →
Coated (C)
Paper with a clay surface (gloss, silk, matte) that keeps ink on top for sharp, saturated colour. Pantone 'C' references are for coated stock.
Colorplan
GF Smith's through-dyed uncoated board in 55 colours and weights to 700 gsm — the luxury stock for letterpress, foil and duplexing. Learn more →
Creep
The outward push of inner pages in a saddle-stitched booklet; compensated by shifting margins page by page. Learn more →
Deboss
An impression pressed into the paper (down). Emboss is raised (up). 'Blind' means no ink or foil in the impression. Learn more →
Die-cut
Cutting a custom shape with a steel-rule or laser die — labels, folders, hangers, shaped cards. Learn more →
Dieline
The vector outline of cuts, folds and perforations, supplied on its own spot-colour layer set to overprint.
DPI / PPI
Dots (pixels) per inch — image resolution at final print size. 300 for close viewing, 100–150 for banners. Learn more →
Duplex
Two sheets glued back to back to make one thick card — often two different colours, showing a coloured edge. Learn more →
Dye sublimation
Printing dye onto transfer paper and heat-pressing it into polyester fabric — the process behind fabric banners and SEG. Learn more →
EDDM
Every Door Direct Mail — USPS bulk postcard program by carrier route with no mailing list required.
Edge painting
Colouring the cut edge of thick cards with a Pantone ink, gilt or foil.
Emboss
Raising part of the sheet with a male/female die for a sculpted logo or pattern.
Foil stamping
Pressing metallic or pigment foil onto paper with a heated die — real gold, copper, silver or holographic finishes. Learn more →
Gang run
Printing several jobs on one sheet to share cost — the economics behind trade printing.
Grommet
A metal eyelet set in a banner hem for rope, bungee or zip-tie mounting; standard spacing every 2 ft. Learn more →
GSM
Grams per square metre — the international paper weight. 350 gsm ≈ 14 pt cover. Learn more →
Hem
A folded, sewn or welded edge on a banner that doubles its strength and holds grommets.
Imposition
Arranging pages on the press sheet so they fall in order after folding and trimming.
Keder
The silicone or PVC bead sewn to a fabric graphic that presses into an SEG frame groove. Learn more →
Kiss cut
Cutting through the label face only, leaving the backing intact — how sticker sheets and roll labels peel.
Kraft
Unbleached brown paper; in labels, a recycled uncoated stock with a natural, handmade look. Learn more →
Lamination
Bonding a plastic film (gloss, matte, soft-touch) to the sheet for durability and feel.
Letterpress
Relief printing that presses an inked plate into soft paper for a tactile impression; best in one Pantone colour. Learn more →
Mesh banner
Perforated 70/30 vinyl that lets ~30% of wind through — for fences, scaffolding and open sites. Learn more →
Overprint
Printing one ink on top of another instead of knocking it out — required for dielines and spot-finish layers.
Pantone (PMS)
The Pantone Matching System of numbered spot-colour inks mixed to formula for exact, repeatable colour. Learn more →
Perfect binding
Softcover binding where page edges are milled and glued (PUR or EVA) into a wrap-around cover with a square spine. Learn more →
Pole pocket
A sewn sleeve at the top and/or bottom of a banner for a rod or pole; 2" fits a 1" pole, 3" fits 1.5".
Preflight
Checking a file for fonts, resolution, colour mode, bleed and layout problems before it goes to press — Kolt does it free on every order. Learn more →
Proof
A PDF (soft proof) or printed sample (hard proof) you approve before production; approval starts the clock.
PUR
Polyurethane reactive glue — the strongest, most flexible perfect-binding adhesive; lays flatter than EVA.
Registration
Alignment of multiple colours or passes to each other; letterpress tolerance is about 1/64".
RGB
Red, green, blue — the light-based colour model of screens. Must be converted to CMYK or Pantone for print. Learn more →
Rich black
Black built with CMY under the K (C60 M40 Y40 K100) for a deep, even solid. Never use it for small type.
Saddle stitch
Folded sheets nested and stapled through the spine — booklets up to roughly 64–92 pages. Learn more →
Safe zone
The area 0.125" (1" on banners) inside the trim where all text and logos must stay. Learn more →
Scrim
The polyester mesh reinforcing inside vinyl banner material that gives it tear strength.
SEG
Silicone edge graphics — fabric prints with a silicone bead that snap into a slim aluminum frame, lit or unlit. Learn more →
Self cover
A booklet whose cover is the same paper as the inside pages; 'plus cover' uses a heavier cover stock.
Silk / satin
A coated paper finish between gloss and matte — low glare, good colour, the default for brochures.
Smyth sewn
Signatures sewn through the fold and to each other — the most durable book binding, lies flat. Learn more →
Soft-touch
A velvety matte lamination; luxurious but fingerprint-prone on dark colours.
Spine
The bound edge of a book; its width depends on page count and paper caliper. Learn more →
Spot colour
A single pre-mixed ink (usually Pantone) printed as its own plate rather than built from CMYK. Learn more →
Spot UV
Glossy UV varnish applied only to selected areas for contrast against a matte sheet.
Step and repeat
A backdrop with logos repeated in a grid for event photography — printed on glare-free fabric. Learn more →
Tension fabric
Stretch polyester finished as a pillowcase or with a silicone edge to fit a frame drum-tight. Learn more →
Trim size
The final cut size of the printed piece.
Turnaround
Production time in business days from proof approval to shipping; excludes transit. Learn more →
Uncoated (U)
Paper with no clay coating — absorbs ink, softer colour, writable. Pantone 'U' references apply.
Unwind direction
Which edge of a roll label comes off first — matters for automatic label applicators.
UV coating
A liquid coating cured instantly with ultraviolet light for a high-gloss, hard finish.
Variable data
Printing where text or images change per piece — names, numbers, QR codes — from a spreadsheet.
White ink
Opaque white printed as a spot layer, under colours on dark or clear stock or alone for text on black. Learn more →
Wind slits
Half-moon cuts sometimes made in solid banners to relieve wind — they weaken the banner; use mesh instead.

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