César Freitas

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Joined on Sep 29, 2026

César Freitas

Nov 7

Skip weekends and holidays in scheduling with a holidays API

#api #webdev #javascript #tools

2 min read

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César Freitas

Nov 6

Check if a date is a public holiday in any country via API

#api #webdev #javascript #tools

2 min read

César Freitas

Nov 5

Add a mortgage/loan calculator to your app via API

#api #webdev #javascript #tools

2 min read

César Freitas

Nov 4

Safely parse and repair JSON returned by GPT-style models

#api #json #llm #webdev

2 min read

César Freitas

Nov 3

Triage noisy logs down to the real error with an API

#api #json #llm #webdev

3 min read

César Freitas

Nov 2

Compress text to fit an LLM token budget with an API

#api #json #llm #webdev

3 min read

César Freitas

Nov 1

Add text-to-speech to a Discord or Telegram bot via API

#api #ai #webdev #audio

2 min read

César Freitas

Oct 31

Generate Portuguese (and 8 more languages) speech via API

#api #ai #webdev #audio

2 min read

César Freitas

Oct 30

Turn articles into audio with a text-to-speech API

#api #ai #webdev #audio

3 min read

César Freitas

Oct 29

Prepare PDFs for a vector database the right way

#api #python #pdf #rag

2 min read

César Freitas

Oct 28

Parse receipts into structured JSON with a simple API

#api #python #pdf #rag

2 min read

César Freitas

Oct 27

Extract clean text from PDFs in Python with one API call

#api #python #pdf #rag

2 min read

César Freitas

Oct 26

Extract tables from PDFs as clean Markdown via API

#api #python #pdf #rag

2 min read

César Freitas

Oct 25

Why a self-hosted-model API can be a cheaper OpenAI alternative

#ai #api #webdev #productivity

3 min read

César Freitas

Oct 24

Auto-write Shopify product descriptions with a content API

#ai #api #webdev #productivity

2 min read

César Freitas

Oct 23

Change the tone of text (formal, casual, persuasive) via API

#ai #api #webdev #productivity

2 min read

César Freitas

Oct 22

Fix grammar and clarity at scale with an affordable text API

#ai #api #webdev #productivity

3 min read

César Freitas

Oct 21

Generate dozens of blog titles programmatically with an API

#ai #api #webdev #productivity

2 min read

César Freitas

Oct 20

Generate dynamic Open Graph share images on the fly via API

#api #webdev #javascript #tools

3 min read

César Freitas

Oct 19

Add loan and compound-interest math to your app via API

#api #webdev #javascript #tools

2 min read

César Freitas

Oct 18

Get public holidays by country and year with a free API

#api #webdev #javascript #tools

2 min read

César Freitas

Oct 17

Clean and fix SRT/VTT subtitle files programmatically

#api #json #llm #webdev

2 min read

César Freitas

Oct 16

Repair broken JSON returned by LLMs with a tiny API

#api #json #llm #webdev

3 min read

César Freitas

Oct 15

Add voiceovers to faceless videos with a simple TTS API

#api #ai #webdev #audio

3 min read

César Freitas

Oct 14

A cheap multilingual text-to-speech API (54 voices, 9 languages)

#api #ai #webdev #audio

3 min read

César Freitas

Oct 13

OCR scanned PDFs into searchable, structured text via API

#api #python #pdf #rag

3 min read

César Freitas

Oct 12

Extract invoice and receipt data to JSON with one API call

#api #python #pdf #rag

2 min read

César Freitas

Oct 11

Convert PDFs to clean Markdown for your RAG pipeline (with OCR)

#api #python #pdf #rag

2 min read

César Freitas

Oct 10

A low-cost alternative to the OpenAI API for everyday text tasks

#ai #api #webdev #productivity

2 min read

César Freitas

Oct 9

Rewrite and paraphrase text programmatically with an AI API

#ai #api #webdev #productivity

3 min read

César Freitas

Oct 8

How to summarize text with an affordable API (a cheaper OpenAI alternative)

#ai #api #webdev #productivity

3 min read

César Freitas

Oct 7

Auto-generate SEO meta descriptions and titles with an API

#ai #api #webdev #productivity

2 min read

César Freitas

Oct 7

Generate e-commerce product descriptions at scale with a simple API

#ai #api #webdev #productivity

2 min read

César Freitas

Sep 29

Turn any PDF into clean Markdown for your RAG pipeline

#ai #api #llm #rag

2 min read

César Freitas

Sep 29

Stop wrestling with broken JSON from your LLM

#api #llm #programming #softwaredevelopment

2 min read

DEV Community

César Freitas

Badges

Writing Debut

Skip weekends and holidays in scheduling with a holidays API

Want to connect with César Freitas?

Check if a date is a public holiday in any country via API

Add a mortgage/loan calculator to your app via API

Safely parse and repair JSON returned by GPT-style models

Triage noisy logs down to the real error with an API

Compress text to fit an LLM token budget with an API

Add text-to-speech to a Discord or Telegram bot via API

Generate Portuguese (and 8 more languages) speech via API

Turn articles into audio with a text-to-speech API

Prepare PDFs for a vector database the right way

Parse receipts into structured JSON with a simple API

Extract clean text from PDFs in Python with one API call

Extract tables from PDFs as clean Markdown via API

Why a self-hosted-model API can be a cheaper OpenAI alternative

Auto-write Shopify product descriptions with a content API

Change the tone of text (formal, casual, persuasive) via API

Fix grammar and clarity at scale with an affordable text API

Generate dozens of blog titles programmatically with an API

Generate dynamic Open Graph share images on the fly via API

Add loan and compound-interest math to your app via API

Get public holidays by country and year with a free API

Clean and fix SRT/VTT subtitle files programmatically

Repair broken JSON returned by LLMs with a tiny API

Add voiceovers to faceless videos with a simple TTS API

A cheap multilingual text-to-speech API (54 voices, 9 languages)

OCR scanned PDFs into searchable, structured text via API

Extract invoice and receipt data to JSON with one API call

Convert PDFs to clean Markdown for your RAG pipeline (with OCR)

A low-cost alternative to the OpenAI API for everyday text tasks

Rewrite and paraphrase text programmatically with an AI API

How to summarize text with an affordable API (a cheaper OpenAI alternative)

Auto-generate SEO meta descriptions and titles with an API

Generate e-commerce product descriptions at scale with a simple API

Turn any PDF into clean Markdown for your RAG pipeline

Stop wrestling with broken JSON from your LLM