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Helpers are functions you can use inside your templates to transform and format data. Fileloom includes 70+ built-in helpers organized into categories.

Using Helpers

Call helpers inside Handlebars expressions:

Helper Categories

Text Transformation

uppercase, lowercase, capitalize, titleCase, slugify, camelCase, snakeCase, initials

String Manipulation

trim, truncate, substring, replace, repeat, padStart, padEnd, reverse, removeSpaces

Math Operations

add, subtract, multiply, divide, modulo, power, sqrt, round, ceil, floor, abs, random

Number Formatting

formatNumber, currency, percentage, formatBytes, ordinal

Date & Time

formatDate, formatTime, formatDateTime, now, addDays, daysBetween, monthName, dayName

Comparison

gt, lt, gte, lte, eq, neq

Logic

and, or, not, isEmpty, isNotEmpty, ternary, default

Arrays

first, last, at, join, length, contains, sum, average, max, min

Business

calculateTax, calculateDiscount, netAmount, invoiceNumber, dueDate

Quick Reference

Most Used Helpers

Combining Helpers

Nest helpers to perform multiple operations:

Helpers in Conditionals

Use comparison helpers with #if:

Helpers in Loops

Use helpers inside #each:

Next Steps

Explore each helper category for detailed documentation and examples: